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Ch. 6 Chemistry and Chemical Safety Flashcards | StudBud
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Ch. 6 Chemistry and Chemical Safety
Ch. 6 Chemistry and Chemical Safety
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1
Surfactants are substances that allow oil and water to _________.
separate
intensify
emulsify
suspend
2
A substance that adds hydrogen to a chemical compound or subtracts oxygen from the compound is called a _______________.
neutralization agent
reducing agent
3
The simplest form of chemical matter that contains only one type of atom is an ___________.
Element
Energy
Compound
Electricity
4
The toxicity of a substance is related to how it is used, and how much of it is used.
Overexposure Principle
Overproduction Principle
5
Prolonged, repeated, or long-term exposure to a certain ingredient; causing sensitivity.
Over-processed skin
Overexposure
6
Liquids that are mutually soluble are ____________.
Miscible
Solutions
Immiscible
7
A molecule containing two or more atoms of the SAME element are __________________.
Energy molecules
Covalent molecules
Elemental molecules
Compound molecules
8
pH is the abbreviation of ________________.
product hydrogen
pure hydrogen
possible hydrogen
potential hydrogen
9
The separation of an atom or molecule into positive and negative ions.
ionization
isolation
10
ATOMS are the basic unit of _________.
Life
Energy
Matter
Space
11
Surfactant molecules have hydrophilic heads and lipophilic tails.
True
False
12
The solute is the substance that is __________.
dissolved
evaporated
suspended
13
A physical mixture is a __________________________________.
physical combination of matter in a specific proportion
physical combination of the same element
physical combination of matter and energy
physical combination of matter in any proportion
14
An emulsion is an unstable physical mixture of two or more _________ substances.
miscible
unstable
stable
Immiscible
15
Pure water has a pH of _____.
5.5
7
16
A stable, uniform mixture of two or more substances is a ___________.
solvent
solute
solution
substance
17
Only products that contain ______ can have a pH.
ions
oil
water
molecules
18
What does organic mean?
a substance is healthy
a substance contains carbohydrates
a substance is expensive
a substance contains carbon
19
Acid-Alkali neutralization reactions ________ the total pH and form water and a salt.
combine
balance
20
Chemistry is the science that deals with the composition, structures, and properties of ________.
Elements
Materials
Matter
Compounds
21
Light and electricity are forms of ________.
liquids
solids
energy
elements
22
When oxygen is chemically combined with a substance, the substance is __________.
oxidized
neutralized
23
The solvent is the substance that ______________________________.
emulsifies the solution
suspends the solution
dissolves the solute and makes the solution
24
Chemical change is a change in the chemical composition or makeup of a _________.
atom
chemical
substance
element
25
Suspensions are ________ physical mixtures of undissolved particles in a liquid.
uniform
stable
unstable
26
A pH below 7 is _______.
acidic
neutral
alkaline
27
________ is known as the universal solvent because is has the ability to dissolve more substances than any other solvent
Oil
Ice
Water
28
A pH above 7 is __________.
alkaline
acidic
neutral
29
a MOLECULE is a chemical combination of two or more atoms.
True
False
30
Oxidation-reduction is also known as redox.
False
True
31
Water is known as the universal solvent.
False
True
32
Alpha hydroxy acids ___________ the skin.
exfoliate
extract
irritate
33
Physical properties include color, density and boiling point.
False
True
34
The pH scale is zero to fourteen
False
True
35
a pH of 7 is ________.
acidic
neutral
alkaline
36
a chemical combination of two or more atoms of DIFFERENT elements are ____________________.
compounded compounds
elemental compounds
compound molecules
elemental molecules
37
products that are __________ should not be mixed or even stored near each other.
endothermic
exothermic
incompatible
38
pH represents the quantity of hydrogen ions.
True
False
39
an ELEMENT is the simplest form of chemical matter and contains many types of atoms
True
False
40
Physical change is a change in the form or physical properties of a substance.
False
True
41
Matter is any substance that ______________.
occupies space and has mass
occupies space and time
occupies energy and has mass
occupies space and has density
42
A carcinogen is a substance that causes or is believed to cause cancer.
False
True
43
Volatile alcohols __________ easily.
evaporate
mix
44
The atomic number represents the number of protons in the nucleus of the atom.
False
True
45
Surfactant molecules temporarily join oil and water to form an ________.
solute
substance
solution
emulsion