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Duplicate of Science 9 Unit B: Matter and Chemical Change Review Flashcards | StudBud
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Duplicate of Science 9 Unit B: Matter and Chemical Change Review
Duplicate of Science 9 Unit B: Matter and Chemical Change Review
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1
Why are noble gases found in light bulbs?
The are more abundant than regular air.
They are nonreactive to the huge heat.
They give off the best light.
2
Dalton's Atomic Theory is best modeled by
plumb pudding or a raisin bun
a billiard ball
a solar system
a planet
3
Name this ionic compound: MgCl
2
Manganese Chloride
Manganese Di-chloride
Magnesium Chloride
Magnesium Di-chloride
4
In J.J. Thomson's plum pudding atomic model, the raisins represent
the nucleus
positive charges
negative charges
neutrons
5
Observing that a substance has a density of 5.0g/ml is a:
Chemical Property
Physical Property
6
In a chemical reaction, the mass of the products equals the reactants. This is known as
The Law of Definite Composition
The Law of Conservation of Mass
The Law of Conservation of Energy
The Atomic Theory
7
Observing that a substance is combustible is a:
Physical Property
Chemical property
8
Combustion and corrosion reactions both use
Heat
Acid
Oxygen
Water
9
How many nitrogen atoms are in the compound NH
4
0
2
4
1
10
Non-Metals are found on which side of the periodic table.
Bordering the stair case.
Right side of the stair case.
Left side of the staircase
11
What are the number of neutrons in fluorine, [atomic number of 9], [atomic mass of 18.998].
10
9
8
11
12
If 43g of Fe
(s)
reacts with O
2(g)
to produce 120g of FeO
(s)
, what was the mass of O
2
in the rxn
77g
163g
15.99g
There is not enough information to solve this problem.
13
A physical change is when a substance...
...changes is form/state.
...changes its chemical composition
...produces something new.
...undergoes a change that is difficult to reverse.
14
Which is NOT part of an atom
proton
electron
neutron
photon
15
This is the scientific field of study that explores the properties of matter.
Chemistry
Engineering
Physics
Biology
16
A molecular compound is formed from
non-metals
metalloids
metals and non-metals
metals
17
H
2
, N
2
, Cl
2
, and Br
2
are all examples of
gases
binary compounds
ionic compounds
diatomic molecules
18
Matter can be separated into two main categories.
Emulsions and Colloids
Mixtures and Pure Substances
Elements and Compounds
Heterogeneous and Homogeneous Mixtures
19
An indisputable chemical change is when...
...there is a change in color
...heat is produced or absorbed
...one or more new substances are formed
...gas bubbles form in a liquid
20
Niels Bohr's Atomic Theory is best modeled by
a solar system
plumb pudding or a raisin bun
a billiard ball
a planet
21
Observing that a substance is malleable is a:
Chemical Property
Physical Property
22
Which is an example of a chemical change:
Clay is molded into a new shape.
Aluminum foil is cut in half.
Rust forms on a nail.
Butter melts on warm toast.
23
In Rutherford's planetary atomic model, the planets represent
atoms
protons
neutrons
electrons
24
A chemical reaction that absorbs heat is
endothermic
isotonic
exothermic
combustion
25
Name this molecular compound: CCl
4
Carbon Quadchloride
Carbon Chloride
Carbon Tetrachloride
Monocarbon Chloride
26
Which is an example of a physical change.
Hydrogen peroxide decomposing into oxygen and water.
Leaves changing color.
Water melting
Paper buring
27
Which is not part of the Particle Model of Matter?
There are no spaces between the particles of solids.
The particles are always in motion.
All matter is made up of extremely tiny particles.
The higher the temperature, the faster the particles move.
28
Metals are found on which side of the periodic table.
Bordering the stair case
Right side of the stair case
Left side of the stair case
29
Observing that a substance is shiny is a
chemical property
physical property
30
This substance has no define shape, but does have a definite volume.
Gas
Liquid
Solid
Plasma
31
Which is NOT an example of a chemical change.
Milk going sour.
Your body digests food.
Cement mix hardening.
hand sanitizer makes your hands feel cool.