Ch.6 Chemistry & chemical safety

Emulsion is an unstable physical mixture of 2 or more immiscible substances + a special ingredient called an emulsifier

An elemental molecule is a molecule containing two or more atoms of the same____in definite proportions

The vast majority of chemicals you come in contact with every day are safe and harmless

Light and electricity are matter

Water and oil are examples of an immiscible liquid

Air contains many substances, including nitrogen, carbon dioxide, and water vapor. This is an example of a _____

What is matter?

Most substances do not exist in a pure state

Molecules are made by combining atoms

A pure substance is a chemical combination of matter in definite proportions

When immiscible liquids are left sitting they seperate forming____

Matter has physical properties that we can touch, taste, smell, or see.

Most of the products that beauty professionals use are physical mixtures

Elements cannot be broken down into a simpler substance without a loss of identity

There are____elements know to science today.

____liquids are mutually soluble, meaning that they can be mixed together to form solutions

Everything you can touch/see (with the exception of light and electricity) is matter.

All chemicals are dangerous or harmful

The solvent is the substance that dissolves the solute and makes the solution

____liquids are not capable of being mixed together to form stable solutions

Since matter is made from chemicals, everything made out of matter is a chemical

All matter has____and_____properties

Physical properties include color, solubility, odor, density, melting point, .....

Examples of chemical properties include the ability of...

Suspensions are unstable physical mixtures of undissolved particles in a liquid

Compound molecules are also known as compounds

a chemical change is a change in the chemical composition or makeup of a substance.

99 elements occur naturally on earth, the remaining(known as synthetic elements) are produced artificially or through___

Physical change is a change in the form or physical properties of a substance, without a chemical reaction or___

All liquids are either miscible or immiscible

Without an understanding of basic chemistry, beauty professionals will not be able to use products effectively & safely

Solutions, suspensions and emulsions are distinguished by

All matter is made up of chemicals

Energy is not matter

A physical mixture is a physical combination of matter in any proportion

As a beauty professional, you will work with chemistry every day

Compound molecules are chemical combinations of two or more____of different elements in definite proportions

Compared with solutions, suspensions contain larger and fewer miscible particles

Light and electricity are forms of_____

Beauty professionals must have a basic knowledge of chemistry to understand how different chemicals affect the...

Chemical change is caused by chemical reactions that create new chemical substances usually by combining or subtracting:

All matter exists in the form of a _____

An element is the simplest form of chemical matter and contains only one type of____

Electrons move around the_____in orbits

All matter can be classified as either a pure substance or a _____

Physical properties are characteristics that can be determined without a chemical reaction and do not involve a ____

All matter in the known universe is made up of elements that have their own distinct physical and chemical properties.

atoms are the basic unit of matter, with a nucleus at the center surrounded by negatively charged_____

Every product used in beauty and wellness services contains some type of chemical

An example of a pure substance is water and salt with atoms in set proportion: 2 hydrogen atomes per oxygen and

Everything known to exist in the universe is made of either matter or energy. There are no exceptions to this rule.

Solutions, suspensions, and emulsions are all physical mixtures

Solid ice undergoes a physical change when it melts into water and then converts into steam when heat is applied

It is important to know and follow the procedures for handling chemicals used in the salon, spa & barbershop by:

Chemistry is the science that deals with the composition, structures, and properties of___and how it___

A solution is a stable, uniform mixture of two or more substances

The nucleus consists of____(positive charge), and____(no charge)

The number of protons determines the element

The solute is the substance that is dissolved in a solution

Chemical properties are characteristics that can be determined only by a chamical reaction and involve a_____

Matter can be changed in two different ways. Physical forces cause physical changes and chemical reactions cause____

When salt is dissolved in water, salt is the___and water is the___

Each element is identified by a letter symbol, such as O for____, C for____, or H for____

Miscible liquids do not seperate when left still

A molecule is a chemical combination of____or more atoms in definite proportions