Chemistry & Chemical Safety 2023

Gina is considered a bit of a “know-it-all” at work. For example, she is always telling Grace, her coworker, “My goodness, Grace, you’d better be using the first surfactant regularly.” Which of the following is Gina most likely trying to say to Grace, in her own strange way?

• “Polish your nails.”

• “Wash your hands.”

• “Comb your hair.”

• “Brush your teeth.”

Harriet’s client Rafael has requested that Harriet use a solution that is neutral to his skin. Which of the following should Harriet be using on Rafael’s skin?

• a pH of 0

• a pH of 7

• a pH of 14

• a pH of 5

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

• 19

• 98

• 89

• 18

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

• to swell the hair

• to soften calloused skin

• to exfoliate the 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 ______.

• an exothermic reaction

• ionization

• an endothermic reaction

• neutralization

What does a reducing agent do?

• subtracts nitrogen from a chemical compound

• adds hydrogen to a chemical compound

• adds oxygen to a chemical compound

• subtracts hydrogen from a chemical compound

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

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

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

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

• Most states and counties have regulations in place.

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.

Celia, Jamison’s client, has asked that he not use any known mutagens in her treatments. Which of the following is the MOST LIKELY reason she made this request?

• She cannot afford to pay for expensive products.

• She has a fear of fire and of things that can easily ignite.

• Her skin is sensitive to highly acidic products and chemicals

• She has a weakened immune system and is susceptible to cancers.

Franco is a product chemist, combining chemicals in order to create solutions, suspensions, and emulsions for the purposes of making clients feel, look, and smell better. Most recently, Franco has been working on lotions and creams that, when mixed with activators, warm the bottles in which they are contained. Upon what is Franco relying to create these lotions?

• neutralization

• exothermic reactions

• ionization

• endothermic reactions