Apple
Which of the following is defined as anything that occupies space (volume) and has mass (weight)?
Matter
Which of the following are the basic building blocks of all matter?
Atoms
The letters pH denote __________, which is the relative degree of acidity or alkalinity of a substance.
Potential hydrogen
Rusting iron and burning wood are examples of a change in what type of properties?
Chemical properties
The Safety Data Sheet (SDS) contains _________ categories of information.
16
What type of chemical reaction requires the absorption of energy or heat from an external source for the reaction to actually occur?
Endothermic reaction
As the basic unit of matter, __________ cannot be divided into simpler substances by ordinary chemical means.
Atoms
A __________ is a stable, uniform mixture of two of more mixable substances that is made by dissolving a solid, liquid, or gaseous substance in another substance.
Solution
Which of the following allows oil and water to mix or emulsify by reducing surface tension?
Surfactants
On a Safety Data Sheet (SDS), which category would include risks of exposure, related symptoms, and acute and chronic effects?
Toxicological information
What type of chemical reaction balances pH and results in the production of water and a salt?
Acid-alkali neutralization reaction
Alkalis tend to __________ the hair.
Swell
What does a pH below 7 indicate?
An acidic solution
When oxygen is chemically combined with a substance, the substance is __________.
Oxidized
The location you use for mixing chemicals must be __________.
Well ventilated
Volatile organic compounds contain __________ and evaporate very easily.
Carbon
__________, also known as alkalis, are compounds of hydrogen, a metal, and oxygen.
Bases
What is the average pH for hair and skin?
5
__________ refers to either the loss of oxygen or the addition of hydrogen.
Reduction
As part of the Safety Data Sheet (SDS) categories, first-aid measures include important symptoms/effects, as well as ___________.
First aid instructions
The are 118 different elements known to science today. How many of these are naturally occurring on Earth?
98
Solutions that do not contain water, such as alcohol or oil, do not have ___________.
pH
An example of a water-in-oil emulsion is __________.
Cold cream (cleansing balm)
An example of an elemental molecule is ___________.
Atmospheric oxygen
The pH scale measures the concentration of hydrogen ions in acidic and alkaline __________ solutions.
Water based