Chemistry & Chemical Safety

Reducing agents add hydrogen to a chemical compound or subtract oxygen from the from the compound

In creating a solution, the liquid used to dissolve a substance is called the

Acids have a pH below 7

Oil loving

This is a colorless gas composed of hydrogen and nitrogen and has a pungent odor

Pure water with a ph of 7 is considered

The skin has an average pH of _______

Cold creams, night creams and massage creams are all this type of emulsion

The separation of substances into ions is known as

If a product has a ph of 8.9, it is considered

The head of a surfactant molecule is

Liquids that mix easily are known as

A substance that allows oil and water to mix

The relative acidity or alkalinity of a substance is known as the pH

Anything that occupies space, and has mass

A chemical reaction in which oxygen is subtracted from or hydrogen is added to a substance is called

Organic chemistry is the study of all substances containing

A combination of substances that are held together by physical rather than chemical ties is called a

What type of change occurs when ice melts into to water

Another name for alkalis is

A chemical reaction that requires the absorption of energy or heat from an external source.

Substances that act as a bridge to allow oil and water to mix are

When acids and alkalis are combined in equal proportions, they neutralize each other

As the basic unit of matter, __________ cannot be divided into simpler substances by ordinary chemical means

Which has the largest particles?

Dissolving a solid, liquid or gas in another substance will result in an emulsion

A NEGATIVE ion is called an anion

Uniting two or more atoms of different elements

Matter assumes the shape of a solid, liquid or gas depending on its

______________ are examples of emulsions used in beauty services.

In relation to the periodic table, H stands for:

If a product contains no water, it will have a high pH

Moisturizing, cleansing and suntan lotions are all this type of emulsion

Not capable of being mixed

Example of a chemical change

The effects of cosmetic products on the skin are based on this type of reaction

Cold cream is an example of a water-in-oil emulsion

Calamine lotion, nail polish with glitter, are both examples of:

A basic unit of matter

When a substance is combined with oxygen, the substance is

A permanent mixture of two or more substances that are united with the aid of a binder is called an