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Final > Chemisty > Flashcards

Chemisty Flashcards

1
Q

How many elements are known to science today?

A

118

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2
Q

Which of the following is the simplest form of chemical matter?

A

An element

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3
Q

The effects of cosmetics and beauty products are based on which of the following?

A

How the body reacts to chemicals

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4
Q

Which of the following is an example of a compound molecule?

A

common table salt

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5
Q

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

A

98

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6
Q

Which of the following is TRUE when salt is dissolved into water?

A

Salt is the solute and water is the solvent.

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7
Q

What is a solute?

A

a substance that is dissolved in a solution

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8
Q

Which of the following is TRUE of all liquids?

A

They are either miscible or immiscible.

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9
Q

What is a solvent?

A

a substance that dissolves a solute and makes a solution

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10
Q

When immiscible liquids are combined, they form ___

A

suspensions

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11
Q

All acids owe their chemical reactivity to _____

A

The hydrogen ion

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12
Q

Which of the following is TRUE of products that are incompatible?

A

No two should be stored next to each other.

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13
Q

What does an oxidizing agent do?

A

releases oxygen

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14
Q

Acid–alkali neutralization reactions occur when an acid is mixed with an alkali in equal proportions, balancing the total pH and forming water (H2O) and _

A

A salt

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15
Q

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

A

to exfoliate the skin

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16
Q

What does a reducing agent do?

A

adds hydrogen to a chemical compound

17
Q

How many accepted pictograms are included in all SDS?

A

9

18
Q

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

A

Most states and counties do not have regulations in place

19
Q

What did the Safety Data Sheet (SDS) replace?

A

the Material Safety Data Sheet (MSDS)

20
Q

An SDS is formatted into ______ categories

A

16

21
Q

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

A ph of 5

Final (13 decks)

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