Podcast
Questions and Answers
Why is it important for chemists to understand the physical and chemical properties of products?
Why is it important for chemists to understand the physical and chemical properties of products?
- To create unique, untested chemical compounds.
- To understand how the uses relate to the products' properties. (correct)
- To ensure their products are affordable.
- To market their products effectively.
What knowledge is essential for scientists in the pharmaceutical industry?
What knowledge is essential for scientists in the pharmaceutical industry?
- How to market drugs to healthcare providers.
- How to design packaging for medications.
- How diseases can be diagnosed and treated. (correct)
- How to produce chemical compounds rapidly.
Which understanding is critical for engineers when designing machines?
Which understanding is critical for engineers when designing machines?
- How to make machines look aesthetically pleasing.
- How materials behave under various conditions. (correct)
- How to fabricate multiple prototypes quickly.
- How to reduce the cost of materials used.
What is a key requirement for science technicians in their work?
What is a key requirement for science technicians in their work?
How should engineers approach energy in machine design?
How should engineers approach energy in machine design?
What is the significance of material properties in engineering?
What is the significance of material properties in engineering?
In what way do science technicians contribute to safety in science organizations?
In what way do science technicians contribute to safety in science organizations?
What common assessment method is used for evaluating understanding in this unit?
What common assessment method is used for evaluating understanding in this unit?
What is produced when sulfuric acid reacts with calcium hydroxide?
What is produced when sulfuric acid reacts with calcium hydroxide?
Which ions are present in a sodium chloride solution during electrolysis?
Which ions are present in a sodium chloride solution during electrolysis?
What role does calcium hydroxide play in the treatment of acidic effluent?
What role does calcium hydroxide play in the treatment of acidic effluent?
Which product is formed when the sodium chloride solution undergoes electrolysis?
Which product is formed when the sodium chloride solution undergoes electrolysis?
Why is calcium hydroxide favored over other bases in treating acidic effluent?
Why is calcium hydroxide favored over other bases in treating acidic effluent?
What defines a salt in the context of acid-base reactions?
What defines a salt in the context of acid-base reactions?
What occurs to impurities in acidic liquid effluent during the treatment process?
What occurs to impurities in acidic liquid effluent during the treatment process?
Which of the following correctly describes electrolysis?
Which of the following correctly describes electrolysis?
What do dashed lines represent in a molecular diagram?
What do dashed lines represent in a molecular diagram?
In the context of symmetrical alkenes, what is true about the attached groups?
In the context of symmetrical alkenes, what is true about the attached groups?
Which statement about chain isomers is accurate?
Which statement about chain isomers is accurate?
Which of the following compounds are both classified as alkanes?
Which of the following compounds are both classified as alkanes?
What is the implication of a molecule's chain length on isomerism?
What is the implication of a molecule's chain length on isomerism?
What does a displayed formula represent in organic chemistry?
What does a displayed formula represent in organic chemistry?
Which of the following is correct about isomers?
Which of the following is correct about isomers?
What aspect of molecular structure becomes clearer when using wedge and dashed lines?
What aspect of molecular structure becomes clearer when using wedge and dashed lines?
What is the molecular formula for butane?
What is the molecular formula for butane?
Why do boiling points vary between butane and 2-methyl propane despite them being alkanes?
Why do boiling points vary between butane and 2-methyl propane despite them being alkanes?
What does a symmetrical alkene typically display?
What does a symmetrical alkene typically display?
Why is it important to show the three-dimensional structure of an organic compound?
Why is it important to show the three-dimensional structure of an organic compound?
What functional group is represented by —COOH in organic compounds?
What functional group is represented by —COOH in organic compounds?
What distinguishes chain isomers from other types of isomers?
What distinguishes chain isomers from other types of isomers?
Which of the following accurately describes how hydrogen atoms are represented in the structure of methane?
Which of the following accurately describes how hydrogen atoms are represented in the structure of methane?
Which statement is false regarding displayed formulas?
Which statement is false regarding displayed formulas?
What occurs when oxygen supply is limited during combustion?
What occurs when oxygen supply is limited during combustion?
What is a reaction mechanism?
What is a reaction mechanism?
What is produced when chlorine radicals collide with chloromethane?
What is produced when chlorine radicals collide with chloromethane?
Which of the following describes free radical substitution?
Which of the following describes free radical substitution?
What does the equation $2CH4 + 3O2 \rightarrow 2CO + 4H2O$ represent?
What does the equation $2CH4 + 3O2 \rightarrow 2CO + 4H2O$ represent?
Which substance is formed from the reaction between methane and chlorine?
Which substance is formed from the reaction between methane and chlorine?
What is a necessary condition for free radical reactions to occur?
What is a necessary condition for free radical reactions to occur?
During the free radical substitution of ethane by bromine, what is the initial step?
During the free radical substitution of ethane by bromine, what is the initial step?
What distinguishes positional isomers from functional group isomers?
What distinguishes positional isomers from functional group isomers?
Which of the following statements about but-2-ene is true?
Which of the following statements about but-2-ene is true?
What is stereoisomerism caused by?
What is stereoisomerism caused by?
Which molecule is an example of a functional group isomer?
Which molecule is an example of a functional group isomer?
Which type of symmetry is associated with but-2-ene?
Which type of symmetry is associated with but-2-ene?
What characterizes optical isomers?
What characterizes optical isomers?
Which of the following is a correct statement about isomers?
Which of the following is a correct statement about isomers?
Flashcards
Science technicians' key skills
Science technicians' key skills
Science technicians need to understand key science concepts to work efficiently and safely in different fields like chemistry, pharmaceuticals, medicine and engineering.
Chemistry in daily life
Chemistry in daily life
Chemists study how compounds behave based on their physical and chemical properties.
Science in medicine
Science in medicine
Scientists in the medical and pharmaceutical industries use their knowledge about the human body to diagnose and treat diseases.
Engineering and materials
Engineering and materials
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Energy transfer in engineering
Energy transfer in engineering
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Assessment for this unit
Assessment for this unit
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Assessment structure
Assessment structure
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Displayed Formula
Displayed Formula
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Organic Compound
Organic Compound
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Isomers
Isomers
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Chain Isomers
Chain Isomers
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Functional Group
Functional Group
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Empirical Formula
Empirical Formula
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Molecular Formula
Molecular Formula
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Three-Dimensional Structure
Three-Dimensional Structure
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What is electrolysis?
What is electrolysis?
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What is a salt?
What is a salt?
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How can acidic waste be neutralized?
How can acidic waste be neutralized?
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Why is calcium hydroxide used to neutralize acid?
Why is calcium hydroxide used to neutralize acid?
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What are the products of electrolysis of sodium chloride?
What are the products of electrolysis of sodium chloride?
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What are the components of a sodium chloride electrolysis setup?
What are the components of a sodium chloride electrolysis setup?
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How does the pH change when acid is neutralized?
How does the pH change when acid is neutralized?
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Why is it important to neutralize acidic effluent?
Why is it important to neutralize acidic effluent?
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Dashed line (in structural formula)
Dashed line (in structural formula)
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Wedge line (in structural formula)
Wedge line (in structural formula)
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Symmetrical alkene
Symmetrical alkene
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Spatial Arrangement
Spatial Arrangement
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What are isomers?
What are isomers?
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What are positional isomers?
What are positional isomers?
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What are functional group isomers?
What are functional group isomers?
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What are stereoisomers?
What are stereoisomers?
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What are optical isomers?
What are optical isomers?
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What are the geometric forms of But-2-ene?
What are the geometric forms of But-2-ene?
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Give an example of positional isomers.
Give an example of positional isomers.
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Give an example of functional group isomers.
Give an example of functional group isomers.
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What is a reaction mechanism?
What is a reaction mechanism?
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What is free radical substitution?
What is free radical substitution?
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How do alkanes react with halogens?
How do alkanes react with halogens?
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What is termination in free radical substitution?
What is termination in free radical substitution?
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What is propagation in free radical substitution?
What is propagation in free radical substitution?
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What is initiation in free radical substitution?
What is initiation in free radical substitution?
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Why is a mixture of products formed in free radical substitution?
Why is a mixture of products formed in free radical substitution?
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What does separation involve in free radical substitution?
What does separation involve in free radical substitution?
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Study Notes
Unit 5: Principles and Applications of Science II
- This unit covers principles and applications of science, focusing on chemistry, biology and physics.
- Assessment will be through a written exam split into three sections: chemistry, biology and physics.
- The exam will contain various question types, including multiple choice, calculations, short answer, and open response questions.
- Assessment outcomes (AOs) cover knowledge of facts, terms, definitions, and scientific formulae (AO1); scientific concepts, procedures, processes, and techniques (AO2); scientific information analysis, interpretation, and evaluation (AO3), and integrating concepts, procedures, processes, and techniques (AO4).
- Command words are used to define the task in the questions, such as describe, draw, explain, identify, name, state, calculate, comment, compare, complete, criticise, deduce, derive, describe, determine, devise, discuss, draw, evaluate, explain, give a reason, identify, specify, plot, predict, show that, sketch, state and justify, and write.
- The different sections (A, B, and C) of the exam cover topics of substances and their uses, properties and production; knowledge of human body systems, organs and functions, and properties of different types of materials.
- Topics include relating properties to uses, metal oxides and metal hydroxides, amphoteric behaviour, and properties and uses of substances (Chemistry).
- Topics in Part B include organs, and systems, and explore the events of the cardiac cycle including the effect of caffeine.
- Other sections cover topics include electrolysis, the production and use of useful materials, and transition metals and industrial catalysts (Chemistry).
- Information on the structure and function of blood and blood vessels, and the role and function of the heart and cardiovascular system (Biology).
- Further topics include the structure of the kidney nephron, and ultrafiltration and selective reabsorption (Biology).
- Methods for measuring lung function and the role of the pleural membranes (Biology).
- The principles of energy changes, enthalpy and energy changes in domestic and industrial applications (Physics) and the nature of energy and its conservation (Physics).
Command Words
- Add/label: Adding labels or units to a diagram or table.
- Assess: Carefully considering factors to form a judgment or conclusion.
- Calculate: Obtaining a numerical answer.
- Comment on: Combining variables from data/information to express a judgment.
- Compare: Discussing the similarities and differences between two or more items; highlighting importance/unimportance.
- Complete: Completing a diagram or table.
- Criticise: Checking and judging a piece of data, plan or statement.
- Deduce: Combining principles/concepts from equations to create a new equation.
- Describe: Giving a detailed account of details.
- Determine: Providing a quantitative answer.
- Devise: Designing/inventing a procedure.
- Discuss: Discussing a topic with different points of view and opinions.
- Draw: Drawing diagrams with or without rulers.
- Evaluate: Judging on worth/success/importance; supporting judgment from available information.
- Explain: Making ideas, situations or problems clear to the reader.
- (Give/State/Name): Recalling information
- Identify: Selecting critical information from the available stimulus/resource.
- Plot: Drawing a graph from provided data.
- Predict: Forecasting a likely outcome.
- Show that: Proving a numerical statement.
- Sketch: Drawing a freehand diagram.
- State and justify/identify and justify: Arguing a judgment/point of view.
- State what is meant by: Defining a term.
- Write: Discussing the question from any given point of view.
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Description
Test your knowledge on the essential concepts of chemistry and engineering, including the properties of materials, the role of different ions in chemical reactions, and the importance of safety in scientific practices. This quiz covers aspects crucial for chemists, engineers, and science technicians in their respective fields.
