Chemistry in Daily Life Quiz
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Questions and Answers

Which of the following types of chemicals is most likely to be found in daily life?

  • Metal ores
  • Radioactive isotopes
  • Petroleum
  • Insecticides (correct)

What is a key characteristic of a scientific investigation in chemistry?

  • It only uses anecdotal evidence.
  • It requires multiple observers.
  • It begins with the observation of a problem. (correct)
  • It does not involve experiments.

Which one of the following industries in Malaysia primarily relies on chemical knowledge?

  • Agriculture (correct)
  • Tourism
  • Information Technology
  • Retail

What is the primary function of personal protective equipment in a laboratory setting?

<p>To prevent chemical exposure (B)</p> Signup and view all the answers

Which of the following is NOT a typical step in a scientific investigation?

<p>Assuming the results (A)</p> Signup and view all the answers

What is one of the key aspects groups should gather information on during the activity?

<p>Contribution of chemists (D)</p> Signup and view all the answers

Which career would most likely be involved in searching for an antidote for dengue fever?

<p>Pharmaceutical researcher (C)</p> Signup and view all the answers

What step follows the identification of a problem in the scientific method?

<p>Hypothesis formulation (D)</p> Signup and view all the answers

What type of technology is specifically mentioned as being utilized for food preservation?

<p>Nanotechnology (A)</p> Signup and view all the answers

What type of chemical is commonly used in achieving desired properties in everyday products?

<p>Household cleaners (C)</p> Signup and view all the answers

Which safety measure is most appropriate for addressing a mercury spill in a laboratory?

<p>Informing a teacher immediately (D)</p> Signup and view all the answers

In which career fields is knowledge of chemistry essential?

<p>Cosmetics, Pharmaceuticals, and Biotechnology (A)</p> Signup and view all the answers

Why is the drying time of the cloth pieces important in the experiment with distilled water?

<p>It helps determine evaporation rates (C)</p> Signup and view all the answers

What is an activity that groups will perform after creating their posters?

<p>Move around to view other groups' posters (B)</p> Signup and view all the answers

In the context of chemistry, what does the term ‘solubility’ refer to?

<p>The ability of a substance to dissolve in a solvent. (B)</p> Signup and view all the answers

In a scientific experiment involving cloth and water, what would a suitable hypothesis state?

<p>Cloth dries faster when folded in specific styles. (D)</p> Signup and view all the answers

Which of the following actions is part of the scientific method?

<p>Conducting experiments to test a hypothesis (C)</p> Signup and view all the answers

What should groups use to comment on the results of other groups during the class activity?

<p>Sticky notes (B)</p> Signup and view all the answers

Which of the following is NOT a step typically involved in the scientific method?

<p>Developing a theory (C)</p> Signup and view all the answers

Which of the following is NOT listed as a career related to chemistry?

<p>Aviation (C)</p> Signup and view all the answers

What might be an example of chemistry's development in industries?

<p>Developing new cleaning agents (B)</p> Signup and view all the answers

What should be considered when designing an experiment to test the effect of temperature on solubility?

<p>The type of solvent and solute involved (A)</p> Signup and view all the answers

What is one method of food preservation mentioned in the activity aside from nanotechnology?

<p>Freezing (B)</p> Signup and view all the answers

What is the primary purpose of the Gallery Walk activity?

<p>Share and evaluate group findings (C)</p> Signup and view all the answers

What is the primary function of a laboratory coat?

<p>To protect against chemical spills (C)</p> Signup and view all the answers

Which piece of equipment is used to wash the body after a chemical accident?

<p>Safety shower (C)</p> Signup and view all the answers

What is the purpose of laboratory shoes?

<p>To protect the feet from injuries (C)</p> Signup and view all the answers

What is the use of a fume chamber?

<p>To carry out experiments that release toxic vapours (B)</p> Signup and view all the answers

Which of the following is used for cleaning the eyes in case of a chemical accident?

<p>Eyewash (A)</p> Signup and view all the answers

What is the function of a fire extinguisher in the laboratory?

<p>To extinguish fires in the laboratory (B)</p> Signup and view all the answers

Why is hand wash important in a laboratory setting?

<p>To remove oil, dirt, and microorganisms (C)</p> Signup and view all the answers

Which of the following substances is known to release toxic vapours?

<p>Concentrated sulphuric acid (A)</p> Signup and view all the answers

What is the property of volatile substances such as alcohol, ammonia, and bromine?

<p>They can easily convert to gas at room temperature. (B)</p> Signup and view all the answers

What is a safe practice for storing volatile wastes?

<p>In closed containers away from heat and sunlight. (C)</p> Signup and view all the answers

Which step should be taken first when a chemical spill occurs in the laboratory?

<p>Inform your teacher or laboratory assistant. (A)</p> Signup and view all the answers

What immediate action should be taken to prevent a chemical spill from spreading?

<p>Use sand to border the spill. (A)</p> Signup and view all the answers

What is a significant risk associated with a broken mercury thermometer?

<p>It may lead to mercury poisoning. (C)</p> Signup and view all the answers

What are some symptoms of mercury poisoning?

<p>Nausea and coughing. (A)</p> Signup and view all the answers

When disposing of contaminated chemical wastes, what should you do?

<p>Label bins or bottles with types of waste. (D)</p> Signup and view all the answers

Why is it crucial to prohibit other students from entering an accident site in the laboratory?

<p>To prevent contamination of other areas. (D)</p> Signup and view all the answers

Which chemical category includes both antibiotics and antiseptics?

<p>Medicine (A)</p> Signup and view all the answers

Which of the following is not a type of pesticide?

<p>Vitamin (C)</p> Signup and view all the answers

What role does antioxidant play in food?

<p>Prevents spoilage (A)</p> Signup and view all the answers

Which chemical is mainly used in the construction industry?

<p>Polymer (A)</p> Signup and view all the answers

Which of the following is primarily used as a food preservative?

<p>Stabiliser (B)</p> Signup and view all the answers

What is the primary purpose of a herbicide?

<p>Control weeds (D)</p> Signup and view all the answers

Which category does coloring belong to in the industrial sector?

<p>Paint (C)</p> Signup and view all the answers

Which chemical is classified under both food and medicine?

<p>Vitamin (C)</p> Signup and view all the answers

Flashcards

Scientific Method

The process of observing, questioning, experimenting, and concluding based on evidence.

Hypothesis

A testable prediction that explains the relationship between variables in an experiment.

Inference

An explanation based on observations and evidence gathered during an experiment.

Variable

Anything that can change or be measured in an experiment.

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Personal Protective Equipment (PPE)

Protection for the eyes, skin, and respiratory system during laboratory work.

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Chemical

A substance that cannot be broken down into simpler substances by ordinary chemical means.

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Chemicals in Daily Life

Chemicals that are commonly used in everyday life.

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Distilled Water

A substance that is pure and has a specific boiling point.

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Scientific investigation

Scientific method used to solve problems in science. It starts with observing a problem, formulating a hypothesis, conducting experiments, analyzing data, and drawing conclusions.

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Experiment

A planned procedure to test a hypothesis and collect data.

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Independent Variable

The factor that is being changed or manipulated in an experiment.

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Dependent Variable

The factor that is being measured or observed in an experiment.

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Controlled Variables

The factors that are kept the same throughout an experiment to ensure a fair test.

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Solubility

The amount of a substance that can dissolve in a given amount of solvent at a specific temperature.

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Temperature

The degree of hotness or coldness of a substance.

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Volatile Substances

Substances that easily convert into gas at room temperature. Examples include alcohol, ammonia, and bromine.

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Hazardous Gases

Harmful gases released from volatile substances. Can cause serious health problems if inhaled.

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Storing Volatile Substances

Proper storage of volatile substances. Closed containers prevent evaporation and minimize exposure.

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Emergency Management Procedure

A sequence of steps to follow in case of a chemical spill.

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Disposing of Chemical Waste

The process of removing chemical waste from the lab safely.

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Mercury

A toxic element found in thermometers. It can be dangerous if spilled and inhaled.

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Mercury Poisoning Symptoms

Symptoms of mercury poisoning caused by inhaling mercury vapor.

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Volatility of Mercury

Mercury is a volatile substance that can evaporate at room temperature. The vapor can cause health problems.

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Food Preservatives

Chemicals added to food to prevent spoilage and extend shelf life. They inhibit the growth of bacteria, mold, and yeast.

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Food Colouring

Chemicals that add color to food products. They can enhance appearance or create specific colors.

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Food Flavouring

Chemicals that enhance the flavor of food. They can be natural or synthetic.

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Food Antioxidants

Chemicals that prevent oxidation and spoilage of food, particularly fats and oils.

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Food Stabilisers

Chemicals that maintain the consistency and stability of food. They prevent separation or changes in texture.

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Antibiotics

Chemicals that kill or inhibit the growth of bacteria in the body. Used to treat bacterial infections.

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Antiseptics

Chemicals that kill or inhibit the growth of germs on surfaces. Used for cleaning and disinfecting.

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Vitamins

Chemicals that are essential for a healthy body and are not naturally produced in sufficient amounts by the body. They often promote specific functions.

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Laboratory coat

A garment worn to protect the body and clothing from chemical spills, such as acids, bases, and solvents.

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Laboratory shoes

Shoes designed to protect the feet from injuries caused by chemical spills, sharp objects, and toxic substances.

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Safety shower

A safety feature used to wash and clean the body when a chemical accident occurs, especially on parts of the body.

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Fume chamber

A specialized enclosure designed to carry out experiments that release toxic vapors, cause combustions, or produce pungent smells.

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Eyewash

A device used to wash and clean the eye when an accident occurs, such as chemical splashes.

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Fire extinguisher

A fire-fighting tool used to extinguish fires in a laboratory setting.

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Hand wash

A designated area for washing hands to remove chemicals, oil, dirt, and microorganisms.

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Chemistry

The study of matter and its properties, as well as how matter changes.

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Information Literacy

The ability to locate, analyze, and evaluate information from various sources, making sense of it and using it effectively for problem-solving and learning.

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Nanotechnology in Chemistry

Techniques used in chemistry to manipulate matter at the nanoscale (one billionth of a meter), leading to improved materials, products, and processes.

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Traditional Food Preservation Methods

Preserving food using techniques such as freezing, salting, or sugaring, which slow down spoilage by inhibiting bacterial growth and enzymatic reactions.

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Nanotechnology for Food Preservation

Using nanotechnology to enhance food preservation by incorporating nanocapsules that slow down oxidation, prevent moisture loss, and control the release of flavoring agents.

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Careers Related to Chemistry

Careers that utilize chemical knowledge and skills in various sectors like pharmaceuticals, cosmetics, biotechnology, nanotechnology, and environmental science.

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Green Chemistry

The application of chemistry to the development of sustainable technologies that minimize environmental impact and preserve natural resources.

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Applications of Nanotechnology

Applications of chemistry in developing new materials, processes, and products with unique properties at the nanoscale, affecting fields like medicine, engineering, and manufacturing.

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Study Notes

Introduction to Chemistry

  • Chemistry is the study of matter and the reactions between substances.
  • Nanochemistry is a rapidly developing field of chemistry focusing on learning about nanoparticles and their properties.
  • Nanoscale is 10⁻⁹ m.
  • Knowledge of chemistry is fundamental to mastering nanochemistry.
  • Chemistry is essential to various fields including medicine, health, agriculture, electronics, and energy.

What will you learn?

  • Development in Chemistry and its importance in daily life.
  • Scientific investigation in chemistry.
  • Usage, management, and handling of apparatus and materials

Chemicals in Daily Life

  • Chemicals are present in food preservatives, coloring, flavoring, stabilizers, and other household items.
  • Medications and medicines utilize chemicals.
  • Agriculture chemicals like herbicides, pesticides, fungicides, fertilizers, and hormones.
  • Industries use paints, polymers, glass, ceramics, detergents, colorings, and alloys.
  • Careers in biotechnology, biomedical engineering, pharmaceuticals, medicine, and cosmetics require knowledge in chemistry.
  • Nanotechnology engineering and green technology also depend on chemistry knowledge.

Scientific Investigation in Chemistry

  • Scientific investigations use the scientific method to solve problems.
  • The method involves observation, hypothesis development, testing, and reporting conclusions.
  • A scientific method investigates a problem, tests a hypothesis, and analyzes data to determine the validity of the solution.

Scientific Method Steps

  • Observation: Observing and recording occurrences in the experiment.
  • Inference: Using data and past experience to make conclusions and explanations.
  • Identifying the problem: Recognizing the issue or question to be addressed.
  • Forming a hypothesis: Making an educated guess about the relationship between variables.
  • Identifying the variables: Determining the manipulated, responding, and controlled variables in the experiment.
  • Controlling the variables: Maintaining constant conditions for all variables except the one being tested.
  • Planning the experiment: Designing steps to test the hypothesis.
  • Collecting data: Methodically gathering and recording the experiment's observations.
  • Interpreting data: Analyzing and organizing collected data using graphs, tables, and calculations.
  • Making a conclusion: Determining the acceptance or rejection of the hypothesis based on data analysis.
  • Preparing a report: Detailed communication and documentation of the results.

Importance of Chemical Storage and Disposal

  • Chemicals in the lab are hazardous and need proper storage and disposal.
  • Chemicals must be stored according to their categories and the hazards they present.
  • Correct and safe disposal of chemicals prevents environmental pollution.
  • Disposal should focus on safety and the environment.

Laboratory Safety

  • Personal Protective Equipment (PPE): Using safety goggles, facemask, gloves, and laboratory coats.
  • Proper handling of chemicals: Labelling hazards and risks of chemical substances.
  • Fire and emergency management: Proper management of fire and other emergencies in the lab.
  • Waste disposal: Correct procedures for disposing all types of toxic materials, used apparatus, and waste products.

Experiment on Solubility

  • Experiment to study the effect of temperature on the solubility of salt in water.
  • Measure the solubility of salt at varied temperatures.

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Description

Test your knowledge about the role of chemistry in everyday life with this engaging quiz. Covering various aspects such as scientific investigation, career applications, and safety measures, this quiz will challenge your understanding of how chemistry impacts our daily activities. Perfect for students studying chemistry or anyone interested in the subject.

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