click below
click below
Normal Size Small Size show me how
CH F6
Chemistry & Chemical Safety
| Question | Answer |
|---|---|
| How many elements are known to science today? | 118 |
| The simplest form of chemical matter | an element |
| Everything you can touch and everything you can see is matter except | light and electricity |
| Any substance that occupies space and has weight is | matter |
| The effect of cosmetics and beauty products are based on | how the body reacts to chemicals |
| Why should beauty professionals study and have a thorough understanding of chemistry? | Because every product used in beauty and wellness contains some type of chemical |
| What is a solute? | a substance that is dissolved in a solution |
| When immiscible liquids are combined, they form ____. | suspensions |
| Liquids are either ______ or _______. | miscible or immiscible |
| When dissolving salt into water the Salt is the solute and the water is the ______. | solvent |
| Common table salts is an example of | a compound molecule |
| ______ are the basic units of matter | Atoms |
| Of all the elements known to science today, how many occur naturally on Earth? | 98 |
| All acids owe their chemical reactivity to ___. | the hydrogen ion |
| The pH scale is used to measure ____. | acidity and alkalinity |
| What is a solvent? | a substance that dissolves a solute and makes a solution |
| The first surfactant | soaps |
| The overexposure principle is used to describe how overexposure determines _____ | toxicity |
| pH is an abbreviation of | potential hydrogen |
| Why is understanding pH important for the beauty and wellness professional? | because it affects the hair, skin, and nails |
| Solutions are ______ mixtures | stable |
| When mixing chemicals, one should _____. | use a measuring device, such as a measuring cup or spoon |
| Why should ammonia never be mixed with bleach? | it creates a potentially deadly gas |
| Products that are incompatible | should not be stored next to each other |
| What accompanies the rapid oxidation of a substance during combustion? | the production of heat and light |
| What does a reducing agent do? | adds hydrogen to a chemical compound |
| What does an oxidizing agent do? | releases oxygen |
| Acid-alkali neutralization reactions occur when an acid is mixed with an alkali in equal proportions, balancing the total pH and forming water (H20) and ______. | a salt |
| Acids would most likely be used to | exfoliate the skin |
| a carcinogen is | a substance that causes cancer |
| How many accepted pictograms are included in all SDS? | 9 |
| An SDS is formatted into _____ categories | 16 |
| What did the Safety Data Sheet (SDS) replace? | the Material Safety Data Sheet (MSDA) |
| SDS are designed for | use in an emergency |
| Most state and counties _______ in place for disposal of many of the chemicals used in salons, spas, and barbershops. | do not have regulations |