Podcast
Questions and Answers
Which of the following is defined as anything that occupies space (volume) and has mass (weight)?
Which of the following is defined as anything that occupies space (volume) and has mass (weight)?
- Energy
- Light
- Matter (correct)
- Heat
How many of the 118 elements are naturally occurring on Earth?
How many of the 118 elements are naturally occurring on Earth?
98
Which of the following are the basic building blocks of all matter?
Which of the following are the basic building blocks of all matter?
- Atoms (correct)
- Molecules
- Cells
- Ions
What element is represented by the symbol H?
What element is represented by the symbol H?
An example of an elemental molecule is ___________.
An example of an elemental molecule is ___________.
As the basic unit of matter, __________ cannot be divided into simpler substances by ordinary chemical means.
As the basic unit of matter, __________ cannot be divided into simpler substances by ordinary chemical means.
Rusting iron and burning wood are examples of a change in what type of properties?
Rusting iron and burning wood are examples of a change in what type of properties?
An example of a physical change is __________.
An example of a physical change is __________.
An example of a chemical change is __________.
An example of a chemical change is __________.
Which of the following is an example of a pure substance?
Which of the following is an example of a pure substance?
__________, also known as alkalis, are compounds of hydrogen, a metal, and oxygen.
__________, also known as alkalis, are compounds of hydrogen, a metal, and oxygen.
A __________ is a stable, uniform mixture of two or more mixable substances that is made by dissolving a solid, liquid, or gaseous substance in another substance.
A __________ is a stable, uniform mixture of two or more mixable substances that is made by dissolving a solid, liquid, or gaseous substance in another substance.
Which of the following allows oil and water to mix or emulsify by reducing surface tension?
Which of the following allows oil and water to mix or emulsify by reducing surface tension?
An example of a water-in-oil emulsion is __________.
An example of a water-in-oil emulsion is __________.
__________ are examples of emulsions used in beauty services.
__________ are examples of emulsions used in beauty services.
The tail of a surfactant molecule is __________, or oil loving.
The tail of a surfactant molecule is __________, or oil loving.
Nail polish, with glitter that can separate from the polish, is an example of a(n) __________.
Nail polish, with glitter that can separate from the polish, is an example of a(n) __________.
Water-in-oil emulsions feel __________ than oil-in-water emulsions.
Water-in-oil emulsions feel __________ than oil-in-water emulsions.
What ingredient is used to raise the pH in hair products?
What ingredient is used to raise the pH in hair products?
Volatile organic compounds contain __________ and evaporate very easily.
Volatile organic compounds contain __________ and evaporate very easily.
What is the chemical reaction that combines a substance with oxygen to produce an oxide?
What is the chemical reaction that combines a substance with oxygen to produce an oxide?
The pH scale is _________.
The pH scale is _________.
A(n) __________ charged ion is called an anion.
A(n) __________ charged ion is called an anion.
The pH scale measures the concentration of hydrogen ions in acidic and alkaline __________ solutions.
The pH scale measures the concentration of hydrogen ions in acidic and alkaline __________ solutions.
What does a pH below 7 indicate?
What does a pH below 7 indicate?
The letters pH denote __________, which is the relative degree of acidity or alkalinity of a substance.
The letters pH denote __________, which is the relative degree of acidity or alkalinity of a substance.
Solutions that do not contain water, such as alcohol or oil, do not have ___________.
Solutions that do not contain water, such as alcohol or oil, do not have ___________.
What is the average pH for hair and skin?
What is the average pH for hair and skin?
Alkalis tend to __________ the hair.
Alkalis tend to __________ the hair.
__________ refers to either the loss of oxygen or the addition of hydrogen.
__________ refers to either the loss of oxygen or the addition of hydrogen.
When oxygen is chemically combined with a substance, the substance is __________.
When oxygen is chemically combined with a substance, the substance is __________.
Oxidation and reduction always occur simultaneously and are referred to as a(n) __________ reaction.
Oxidation and reduction always occur simultaneously and are referred to as a(n) __________ reaction.
What type of chemical reaction requires the absorption of energy or heat from an external source for the reaction to actually occur?
What type of chemical reaction requires the absorption of energy or heat from an external source for the reaction to actually occur?
What type of chemical reaction balances pH and results in the production of water and a salt?
What type of chemical reaction balances pH and results in the production of water and a salt?
The Safety Data Sheet (SDS) contains _________ categories of information.
The Safety Data Sheet (SDS) contains _________ categories of information.
On a Safety Data Sheet (SDS), which category would include risks of exposure, related symptoms, and acute and chronic effects?
On a Safety Data Sheet (SDS), which category would include risks of exposure, related symptoms, and acute and chronic effects?
As part of the Safety Data Sheet (SDS) categories, first-aid measures include important symptoms/effects, as well as ___________.
As part of the Safety Data Sheet (SDS) categories, first-aid measures include important symptoms/effects, as well as ___________.
The location you use for mixing chemicals must be __________.
The location you use for mixing chemicals must be __________.
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