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Chemistry 101 Review
Adding electrons to an atom creates this:
Changes in chemicals are the result of...
Chemistry 101 Review
50 terms
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Week 10 review
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1
Changes in chemicals are the result of...
explosions on an atomic level
reactions between chemicals
building air pressure
reduction in air pressure
2
Adding electrons to an atom creates this:
Element
Isotope
Magic
Ion
3
The columns of the periodic table are called...
levels
periods
ages
groups
4
Covalent bonds occur between...
Metals
Hydrogen and another element
Metals and non-metals
Non-metals
5
Negative ions are called...
Anions
Cations
Neutrons
Isotopes
6
Positive ions are called...
Anions
Protons
Cations
Isotopes
7
The Law of Definite Proportions...
was discovered by Joseph Proust.
All of the above.
states that a molecule is always the same # of elements.
is used in balancing equations.
8
Eating too many carbohydrates can mean...
blood sugar spikes.
the body stores too much fat.
the body takes in too much glucose.
insulin production is affected.
9
Which of these ISN'T on the periodic table?
element name/symbol
atomic orbital
atomic number
atomic weight
10
Two substances together with no bond are a...
Mixture
Molecule
Atom
Compound
11
Which of these is NOT a family of elements?
none of the above
halogens
alkali metals
noble gases
12
The rows of the periodic table are called...
levels
groups
ages
periods
13
Fat is necessary for...
Nothing
Nutrient storage
Flavor
Brain function
14
The atomic number refers to the number of ...
protons
positrons
neutrons
electrons
15
Carbon chemistry is also known as...
Organic chemistry
Stoichiometry
Nutritional science
Molecular biology
16
The Law of Conservation of Matter...
was defined by Lavoisier.
states that matter should not be wasted.
states that matter cannot be created or destroyed.
implies that both sides of a chemical equation will balance.
17
The last part of an atom to be discovered
Electron
Neutron
Proton
Nucleus
18
Pierre and Marie Curie discovered how many radioactive elements?
3
2
4
1
19
Boyle's Law demonstrates a relationship between...
volume and area
pressure and volume
speed and pressure
force and mass
20
Which is NOT one of the three types of nutrients broken down by the digestive system?
Vitamins
Carbohydrates
Proteins
Fats
21
An allotrope is the same element...
with extra electrons.
arranged in a different shape.
with a carbon bond.
with extra neutrons.
22
A unit of energy, this indicates the amount of energy needed to "use up" a nutrient.
Gram
Mole
Calorie
Pound
23
About how many known elements are there?
100
50
10
200
24
Which scientist is credited with coming up with the periodic table?
Mendeleev
Einstein
Lavoisier
Priestly
25
The first source the body uses for energy is...
Protein
Carbohydrates
Fat
Muscle
26
An individual's nutrient needs are based on...
Height
Age
Activity Level
Weight and fitness goals
27
A molecule made up of a string of many molecules is called...
A monomer
A polymer
An allotrope
An atom
28
All organic matter contains...
Carbon
Water
Chlorophyll
Blood
29
Excess glucose is stored as...
Blood
Insulin
Sugar
Fat
30
Two elements chemically combined are called a...
Mixture
Compound
Atom
Molecule
31
Elements on the periodic table are arranged by...
reactivity
atomic number
number of neutrons
atomic weight
32
Isotope literally means...
equal value
isolated
on the top
equal place
33
When balancing equations...
The large number on one side of the equation must total 10.
The subscript numbers cannot change.
Only one side of the equation can change.
The large numbers cannot change.
34
Which of these is conserved in every chemical reaction?
Formula numbers
Moles
Molecules
Mass
35
The Law of Conservation of Mass states that...
matter can only be created from other matter
matter can be destroyed but not created
matter is limited and must be conserved
matter can't be created or destroyed
36
Ionic bonds occur between...
Hydrogen and another element
Metals and non-metals
Metals
Non-metals
37
"Half-life" refers to...
how long it takes for a chemical reaction to occur
how long it takes for an element to form
how long it takes for half the protons to split
how long it takes for half an element to decay
38
A "mole" tells us...
How many holes are in the yard.
How much an element weighs.
How big an element is.
How many electrons are in an element.
39
99% of the known universe is either...
oxygen or carbon
hydrogen or helium
oxygen or hydrogen
carbon or hydrogen
40
Which scientist had 7 students win the Nobel Prize?
J. J. Thompson
Joseph Priestly
Michael Faraday
Alessandro Volta
41
Two elements electrically bonded are a...
Molecule
Mixture
Atom
Compound
42
Adding neutrons to an electron creates this:
Miracle
Element
Isotope
Ion
43
Mass and weight are the same thing.
Only on the moon.
Sometimes.
True
False
44
Proteins are made up of...
DNA
Fats
Glucose
Amino acids
45
The valence number refers to...
The number of orbitals in the element
the number of neutrons in the nucleus
the number of electrons in the outer shell
the number of electrons in the nucleus
46
Metallic bonds occur between...
Metals and non-metals
Hydrogen and another element
Non-metals
Metals
47
Carbohydrates are quickly broken down into...
Insulin
Fat
Glucose
Blood cells
48
Chemical reactions...
are required for life - and everything- to exist.
are not necessary unless you're a chemist
are invisible
create new elements
49
Chemistry is...
completely unrelated to my life.
unrelated to biology.
the study of matter and energy and their interactions.
boring.
50
Allotrope literally means...
Same place
Different shape
Different place
Same shape
