NAIL TECH: CHEMISTRY AND CHEMICAL SAFETY STUDY GUIDE

Of all the elements known to science today, how many occur naturally on Earth?

• 92

• 118

• 80

• 102

For which of the following purposes would acids most likely be used?

• to swell the hair

• to exfoliate the skin

• to soften calloused skin

• to raise the pH of products

If you were to leave the freezer open all night, all of the ice will melt. This is a result of ______.

• the increase in temperature.

• the decrease in humidity.

• the increase in pressure.

• the decrease in air flow.

A reducing agent is a substance that:

• gains electrons and is oxidized

• loses electrons and is oxidized

• gains electrons and is reduced

• loses electrons and is reduced

Which of the following is TRUE today of the disposal of many of the chemicals used in salons, spas, and barbershops?

• Most states and counties do not have regulations in place.

• Most states and counties have regulations in place.

• There are strict and universal regulations in place across the United States.

• There are no regulations in place anywhere across the United States.

Which of the following is TRUE of creams, lotions, masks, and makeup?

• They never contain chemicals.

• They contain chemicals whether they come from natural sources or from ingredients manufactured in a laboratory.

• They only contain chemicals if they come from ingredients manufactured in a laboratory.

• They only contain chemicals if they are not made from natural sources such as plant extracts.

Upon what is Franco relying to create these lotions?

• Natural ingredients

• Synthetic chemicals

• Ancient recipes

• Modern technology

Which of the following is an example of a chemical change?

• liquid nail polish hardening

• ice melting to become water

• water evaporating into the air

• exposed metal rusting

All acids owe their chemical reactivity to ______.

• protons (H+)

• neutrons

• electrons

• oxygen atoms

How many elements are known to science today?

• 118

• 120

• 115

• 112