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Ch. 7- Basics of Chemistry Flashcards | StudBud
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Ch. 7- Basics of Chemistry
Ch. 7- Basics of Chemistry
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1
What are the two branches of chemistry?
Anagen and catagen
Organic and inorganic
Artificial and natural
Alkaline and acidic
2
What has physical properties that we can see, smell, taste and touch?
Radiation
Matter
Energy
Electricity
3
What is an ion?
Spark discharge during the ionization process
Atom or molecule that carries an electrical charge
Atom or molecule without an electrical charge
Dust particles left over after the ionization process
4
What type of neutralization reaction forms water and salt?
Reduction – compound
Acid – alkali
Atom – alkali
Solution – compound
5
What is true of moisturizer?
It is a waters – in oil – emulsion
It is a oil-in- water reduction
It is an oil-in-water emulsion
It is a water-in-oil reduction
6
What is reduction?
Addition of oxygen or the loss of hydrogen
Loss of oxygen or the addition of hydrogen
Addition of both oxygen and hydrogen
Loss of both oxygen and hydrogen
7
What is true of oxygen?
It is the most abundant element on eart
Contrary to popular believe, there is no oxygen in the air
It is the least abundant element on earth
It should not be ingested because it is poisonous to humans
8
What type of substance has a pH level of 7.0?
Toxic
Acidic
Neutral
Alkaline
9
What are suspensions?
Stable mixtures of two or more immiscible substances
Chemical compounds made from a reduction and a solution
Chemical compounds made from a reduction and a suspension
Unstable mixtures of two or more immiscible substances
10
What is true of liquid?
It is matter with fixed volume and definite shape
It is matter with no fixed volume and no definite shape
It is matter with fixed volume but no definite shape
It is matter with no fixed volume but definite shape
11
What is true of elements?
There are only five basic elements in the universe
In chemistry, the main elements are sunshine, clouds, rain, and snow
Elements are the most complex form of matter
Elements are the simplest form of matter
12
What is light a form of?
Gas
Liquid
Matter
Energy
13
How much of the air is made up of nitrogen?
Two-thirds
One-quarter
Three-eighths
Four-fifths
14
What are most skincare products?
Suspensions of oil and water
Reductions of oil and water
Solutions of oil and water
Emulsions of oil and water
15
How much of earths surface, approximately, is water?
25%
10%
100%
75%
16
What is the study of substances that contain carbon?
Carbon dating
Organic chemistry
Carbon chemistry
Organic dating
17
What is united with the aid of an emulsifier to create an emulsion?
Two or more immiscible substances
A reduction and a solution
A surfactant and a liquid
Two or more miscible substances
18
What element is absent from the compounds studied in inorganic chemistry?
Carbon
Oxygen
Nitrogen
Helium
19
What causes oxidation?
Addition of both oxygen and hydrogen
Addition of hydrogen or the loss of oxygen
Loss of both oxygen and hydrogen
Addition of oxygen or the loss of hydrogen
20
What term means “water-loving”?
Hydrophobic
Hydroactive
Hydrocentric
Hydrophilic
21
What is the term that refers to matter and it’s three physical forms ( liquid, solid, gas)?
Chemical properties
Appearances of matter
States of matter
Physical properties
22
What is air?
Water vapor that forms clouds
Shell of radiation surrounding earth
Gaseous mixture that makes up the earth atmosphere
Common name for the chemical that makes the sky appear blue
23
What is the natural pH of the skin?
3.5
7.0
5.5
7.5
24
What businesses primarily use oil-in -water emulsions?
Salons and spas
Auto repair shops
Fast food restaurants
Bakeries
25
What do antioxidants prevent by neutralizing free radicals?
Oxygenation
Ionization
Radicalization
Oxidation
26
What is a solution?
Uniform mixture of two or more mutual miscible substances
Unstable mixture of an emotion and a reduction
Unstable mixture of the largest particles
Uniform mixture of two or more mutually immiscible substances
27
What is true of water?
It is the most abundant of all substances on earth
The human body is made entirely of water
It is a relatively scarce substance
Water comprises a very small portion of the human body
28
What is a difference between water-in-oil(w/o) emulsion and oil-in-water(o/w) emulsion?
O/w emotions are not easily rinsed away with water
W/O emotions are greasier
W/o emotions are easily rinsed away with water
O/W emotions are greasier
29
What is NOT true of atoms?
All atoms are identical
They are small particles of elements
All matter is composed of Atoms
Atoms consist of smaller particles
30
What does the term miscible mean?
Capable of being mixed
Incapable of being mixed
Incapable of being ionized
Capable of being ionized
31
What is any substance that is dissolved by a solvent to form a solution?
Suspension
Solute
Emulsion
Matter
32
What are substances with a pH above 7.0?
Reductions
Acids
Alkalis
Solutions
33
composition, structure, and properties of matter and how matter changes under different conditions?
Chemistry
Biology
Physiology
Ergonomics
34
What is an atom with a positive electrical charge?
Cation
Anion
Molecule
Neutron
35
What term refers to molecules that contain two or more atoms of the same element?
Chemical molecules
Atomic molecules
Elemental molecules
Radiological molecules
36
What element is found in all living things, whether they are plants or animals?
Radon
Zinc
Helium
Carbon
37
What term refers to substances with a pH below 7.0?
Solutes
Acids
Alkalis
Bases
38
What is an ion with a negative charge?
cation
Molecule
Anion
Neutron
39
What term means “oil-loving”?
Lipophilic
Lipocentric
Lipoactive
Lipophobic
40
What is true of each of the approximately 90 naturally occurring elements?
Each has its own distinctive physical and chemical properties
All share the same physical and chemical properties
Though physical properties vary, all have the same chemical properties
Though chemical properties vary, all have the same physical properties
