There are 118 different elements known to science today. How many of these are naturally occurring on earth?

Which of the following are the basic building blocks of all matter?

The letter H stands for the element:

An example of an elemental molecule is:

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?

An example of a physical change is:

An example of a chemical change is:

Which of the following is an example of a pure substance?

__, AKA alkalis, are compounds of hydrogen, a metal, and oxygen

A __ is a stable, uniform mixture of 2 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?

An example of a W/O emulsion is:

__ are examples of emulsions used in beauty services

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:

W/O emulsions feel __ than O/W emulsions

__ is the ingredient used to raise the pH in hair products to allow the solution to penetrate the hair shaft

VOCs contain __ and evaporate very easily

__ is the chemical reaction that combines a substance with oxygen to produce an oxide

The pH scale is:

A/n __ charged ion is called an anion

The pH scale measures the concentration of hydrogen ions in acidic and alkaline __ solutions

What does a pH below seven indicate?

The letters pH denote ___, which is the relative degree of acidity or alkalinity of a substance

Nonaqueous solutions, such as alcohol or oil, do not have ___

What is the average pH for hair and skin?

Acidic solutions tend to ___ the hair

__ refers to either the loss of oxygen or the addition of hydrogen

When oxygen is combined with a substance, the substance is:

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 balances pH and results in the production of water and a salt?

The SDS contains 16 categories of information

On a SDS, what category would include routes of exposure, related symptoms, and acute and chronic effects?

As part of the SDS categories, first aid measures include important symptoms/effects as well as:

On SDS sheets, emergency procedures, protective equipment, and proper methods of containment and cleanup are listed as:

As part of the SDS categories, handling and storage list precautions for safe handling and storage, including:

The location you use for mixing chemicals must be: