12 & 13 Chemistry and electricity-

Ultraviolet light is the least penetrating

How many elements occur naturally

Intense light therapy is a medical device used to treat

Also known as an insulator, a material that does not transmit electricity.

Name a few nonconductors

________ is an applicator that directs the electric current from the machine to the clients skin .

Name the states of matter

Name the pungent, colorless gas that is composed of hydrogen and nitrogen.

A switch that automatically shuts off an electrical circuit at the first sign of an overload

Infrared ray make up to 60% of natural sunlight.

A ________ is a chemical combination of two or more atoms in definite (fixed proportions)

What is the sweet, colorless oily substance used as a moisturizing agent

Elemental molecules contain two or more atoms of the same element

_______ _______ are a chemical combination of two or more atoms of different elements in definite proportions.

What does Ph stand for?

Nonconductors are also called ___________.

Protons have a negative charge

Currents used in facial and scalp treatments are called _________

All of the following are considered inorganic substances Glass, water, hydrogen peroxide and hydroxide hair relazer

Exothermic reaction is a chemical reaction that releases a significant amount of heat.

Inorganic substances are not and were never alive

________ is any substance that occupies space and has mass (weight)

What is the substance that dissolves the solute to form a solution

Energy does not occupy space or have matter

Alkaline solution has a Ph below 7

Phototherapy also known as light therapy is used to

What prevents excessive current from passing through a circuit?

A normal wall socket contains how many volts of electricity?

The nucleus consists of _______ which are positively charged

A watt measure how much electricity is used in one second

An ion is an atom or molecule that carries an electrical charge

All matter has physical and chemical properties and exist in the form of liquid, solid or gas

What completes an electric circuit and carries the current safely away?

A _______ is a substance that permits electrical current to pass through it

violet ray is another term for tesla high frequency

A/an _______ is the simplest form of chemical matter and cannot be broken down without losing its identity.

Why should Barbers have a through understanding of chemistry?

Which of the following are considered organic substances?

How many known elements exist?

What is the apparatus that changes direct current into alternating current.

An _______ is a basic unit of matter with a nucleus at the center.

Name the colors of visible heat rays