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Pivot Point 102.6-102.7 Chemistry matter & ph Flashcards | StudBud
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Pivot Point 102.6-102.7 Chemistry matter & ph
Pivot Point 102.6-102.7 Chemistry matter & ph
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1
All of the following statements regarding the pH scale are true EXCEPT:
Values below 7 indicate more acidity
Values below 7 indicate more alkalinity
Logarithmic scale that identifies the degree of acidity
7 indicates a neutral substance
2
Water molecules have 2 hydrogen atoms and 1?
Nitrogen atom
Sulfur atom
Oxygen atom
Helium atom
3
Two or more atoms joined together by a chemical bond is a ?
Protein
Electron
Molecule
Neutron
4
In what pH range is hair, skin and nails?
6.5 to 7.0
7.5 to 10.5
11.5 to 12.0
4.5 to 5.5
5
Atoms have 3 main parts: Protons, neutrons and:
Compounds
Neutrons
Electrons
Elements
6
What’s happens when alkali is placed in water?
They neutralize each other
There are fewer “loose” OH- ions
Alkali decreases the concentration of hydrogen ions
Alkali increases the concentration of hydrogen ions
7
On the pH scale, numbers less than 7 indicate a?
Acidic solution
Neutral solution
Chemical solution
Alkaline solution
8
A simple unit of a carbohydrate is called:
Polysaccharides
Saccharide
Monosaccharides
Disaccharides
9
A solution that has more negative hydroxide ions than positive are?
Neutral
Acidic
Alkaline
Slightly alkaline
10
Which of the following conditions is an ex. Of chemical change?
Raindrops turning to snow
Water to ice
Water to steam
Oxygen and hydrogen combining to form water
11
On the pH scale, numbers greater than 7 indicate a:
Neutral solution
Acidic solution
Alkaline solution
Chemical solution
12
When a substance gains an electron and oxygen is released, the process is called?
Oxidation
Resuscitation
Addition
Reduction
13
The chemical symbol carbon is:
Ca
Co
C
Cab
14
What is a negatively charged ion called?
Hydrogen
Anion
Acid
Cation
15
All matter that is now living or was alive at one time, with carbon present, falls within the scientific division of:
Physics
Anatomy
Inorganic chemistry
Organic chemistry
16
The atomic number of a particular element indicates:
The number of electrons in a single atom
The number of atoms in a single element
The number of protons in a single atom
The number of neutrons in a single atom
17
Many products estheticians use are the result of chemically uniting 2 different elements, which is known as?
Compound
Molecule
Atom
Mixture
18
A solid is defined as:
Matter with definite weight and volume but no definite shape
Matter with definite weight but indefinite volume and shape
Matter with definite weight, volume and shape
Matter with no definite weight but indefinite volume and shape
19
Matter with definite weight and volume but no definite shape is called?
Organic
Liquid
Solid
Gas
20
Why is skin a solid?
Has definite weight but indefinite volume and shape
Has definite weight, volume and shape
Has definite weight and volume but no definite shape
Has indefinite weight, volume and shape
21
What is created when amino acids join together in chains:
Elements
Proteins
Compounds
Chemicals
22
What is the smallest complete unit of an element?
Amino acid
Compound
Atom
Molecule
23
Why is pure water considered a neutral substance?
Ions are positively charged
Anions and cations are present
Positive and negative ions balance each other out
Positive and negative alkali cancel out each other out
24
Atoms that are the same form a:
Emulsion
Compound
Element
Mixture
25
What color does blue litmus paper turn when placed in acid?
White
Orange
Green
Red
26
The primary materials the body uses to construct and renew itself is?
Proteins
Nitrogen
Carbohydrates
Lipids
27
Which of the following is NOT an example of physical change?
Performing a thermal style
Iron changing to rust
Performing a haircut
Breaking glass
28
Why do unstable atoms seek other atoms with which they can share electrons?
To become amino acids
To get rid of extra electrons
To complete their outer shell
To become protein
29
Acid tends to taste:
Bitter
Sweet
Salty
Sour
30
Distilled water with a pH of 7 is considered?
A salt
An alkali
An acid
Neutral
31
When 2 molecules of the element oxygen have combined, it is called a?
Compound molecule
Compound element
Elemental molecule
Chemical bond
32
What ingredient is listed as the primary ingredient on many skin care products?
Salt
Water
Ammonia
Oil
33
Basic substances that can not be broken down into simpler substances are called?
Molecules
Solids
Compounds
Elements
34
What kind of substance does pH indicate the acidity or alkalinity of?
Water-based
Oil-based
Hydrogen-based
Alcohol-based
35
Electrons have which type of electrical charge?
None
Neutral
Positive
Negative
36
The scientific study of matter and the physical and chemical changes of matter is known as?
Physics
Anatomy
Chemistry
Psychology
37
pH stands for?
Perfect hair
Potential hydroxide
Product hydration
Potential hydrogen
38
What is the most common element in the universe?
Sulfur
Nitrogen
Oxygen
Hydrogen
39
The term used to identify anything that occupies space and has weight is called?
A gas
Matter
A solid
Organic
40
What color does red litmus paper turn when places in alkali?
Orange
Green
White
Blue