WorksheetsChapter 7 Test Review
Total questions: 62
Worksheet time: 40mins
Name
Class
Date
1.
What is this an example of?
a)
chemical formula
b)
element
c)
mixture
d)
compound
2.
__________ is a group of two or more atoms help together by chemical bonds.
a)
atom
b)
molecule
c)
heterogeneous mixture
d)
homogeneous mixture
3.
_________ is a substance made of two or more elements chemically combined in a set ratio.
a)
compound
b)
mixture
c)
atom
d)
element
4.
__________ is a substance that cannot be broken down into any other substance.
a)
An element
b)
A mixture
5.
_________ are two or more substances together in the same place but not chemically combined.
a)
mixture
b)
compound
c)
element
d)
molecule
6.
What is this an example of?
a)
mixture
b)
compound
c)
element
d)
molecule
7.
What is this an example of?
a)
mixture
b)
compound
c)
element
d)
molecule
8.
What is this an example of?
a)
mixture
b)
compound
c)
element
d)
molecule
9.
What is this an example of?
a)
mixture
b)
compound
c)
element
d)
molecule
10.
What is this an example of?
a)
atom
b)
molecule
c)
element
d)
mixture
11.
What is the force of attraction between two atoms?
a)
chemical bond
b)
atom
c)
chemical formula
d)
mixture
12.
A molecule is made up of ________.
a)
atoms
b)
elements
c)
compounds
d)
mixtures
13.
A mixture of iron shavings and sulfur particles could be separated by _________.
a)
magnetic attraction
b)
filtration
c)
distillation
d)
evaporation
14.
The ratio of hydrogen atoms to sulfur atoms in sulfuric acid, H2SO4 is ________. (Hint: simplify!)
a)
2 to 4
b)
1 to 2
c)
1 to 4
d)
2 to 1
15.
The ratio of carbon atoms to oxygen atoms in glucose, C6H12O6 is ________. (Hint: simplify!)
a)
6 to 6
b)
1 to 1
c)
2 to 4
d)
2 to 1
16.
The chemical _________ for water is H2O.
a)
symbol
b)
formula
17.
Substances in a ___________ mixture can usually be seen and are easily separated.
a)
homogeneous
b)
heterogeneous
18.
Can an element be broken down into a simpler substance
a)
yes
b)
No
19.
Which one has more than one type of atom in it
a)
Element
b)
Compound
20.
Is salt (NaCI) a compound or a element
a)
Compound
b)
element
21.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
22.
A combination of substances that are not chemically combined is called a(n)____________.
a)
mixture
b)
compound
c)
physical
23.
Mixtures are separated through ___________changes.
a)
mixture
b)
compound
c)
physical
24.
What kind of properties can only be observed when a substance changes into a different substance?
a)
physical properties
b)
chemical properties
c)
liquid properties
d)
real properties
25.
Anything that takes up space and has mass is...
a)
Matter
b)
Work
c)
Power
d)
Newton's 1st Law
26.
Matter is a composition that is always the same is...
a)
Mixture
b)
Atom
c)
Matter
d)
Substance
27.
What is the volume of the rock? The water level is displaced from 20 mL to 23 mL with the rock.
a)
3 mL
b)
23 mL
c)
20 mL
d)
43 mL
28.
What are the three states of matter?
a)
gas, liquid, mass
b)
solid, liquid, gas
c)
mass, volume, thermal energy
d)
gas, temperature, solids
29.
Which physical property is the amount of space something takes up and can be measured with a graduated cylinder?
a)
conductivity
b)
relative density
c)
thermal energy
d)
volume
30.
When paper is folded to make an origami bookmark, what physical property of the paper changes?
a)
mass
b)
weight
c)
shape
d)
smell
31.
Which tool would be used to measure the mass of an object?
a)
balance
b)
graduated cylinder
c)
meter stick
d)
spring scale
32.
What is an example of a physical property?
a)
reactivity
b)
color
33.
What is mass
a)
how much something weighs
b)
mass is how much matter is in something
c)
matter
d)
stuff
34.
you test by seeing which material can scratch the other material
a)
Hardness
b)
Malleability
c)
Density
d)
Conductivity
35.
ability to allow heat to flow
a)
Viscosity
b)
Conductivity
c)
Density
d)
Melting/Boiling Point
36.
Definition of Physical property
a)
properties are those that can be observed without changing the identity of the substance
b)
Properties that describe how a substance changes into a completely different substance
37.
An example of a physical property wold be?
a)
rust
b)
world war 1
c)
change of state
d)
Asia
38.
Which is an example of a physical property?
a)
rusting
b)
boiling point
c)
combustion
d)
reactivity with water
39.
Pull of gravity on an object:
a)
Gravity
b)
mass
c)
weight
d)
volumer
40.
A small particle that makes up matter.
a)
Atom
b)
Molecule
c)
Ion
d)
Bond
41.
A property of matter that describes its ability to change into entirely new substances is called a(n)____________
a)
flammability
b)
reactivity
c)
nonflammability
d)
chemical property
42.
The ability of a substance to burn is a chemical property known as________________
a)
flammability
b)
reactivity
c)
nonflammability
d)
chemical property
43.
What chemical property causes rust to form on a nail?
a)
conductuvity
b)
nonflammability
c)
reactivity with oxygen
d)
flammability
44.
What do physical changes NOT change?
a)
the identity of the matter
b)
the amount of matter
c)
the state of matter
d)
the volume of the sample
45.
Which of these phrases describes a chemical change?
a)
pouring milk into a glass
b)
melting an ice cube
c)
digesting food in your body
d)
bending an iron nail
46.
Sam cooks butter in a pot. He boils water in a different pot. How does heating change the materials?
a)
The butter will evaporate. The water will evaporate
b)
The butter will melt. The water will evaporate
c)
The butter will melt. The water will melt.
47.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
48.
Is glass breaking a chemical or phyiscal change?
a)
chemical
b)
physical
49.
Is hammering wood together to build a house a chemical or physical change?
a)
chemical
b)
physical
50.
Is a a rusting bicycle a chemical or physical change?
a)
chemcial
b)
physical
51.
Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
a)
7 mL
b)
7 g/cm3
c)
28 g/cm3
d)
1/7 g/cm3
52.
Which units of measurement are used for volume?
a)
grams
b)
centimeters
c)
grams/milliliter
d)
milliliter
53.
Which lab tool might you use to measure the volume of a liquid?
a)
electric scale
b)
bunsen burner
c)
test tube
d)
graduated cylinder
54.
I have two objects with the same volume but different masses. Which object will be more dense?
a)
The object with less weight.
b)
The object with more weight.
c)
The object with more mass.
d)
The object with less mass.
55.
What is the formula for density?
a)
density = mass x volume
b)
density = mass / volume
c)
density = mass + volume
d)
density = mass - volume
56.
In nature, heat always flows from a:
a)
cold object to a warm object.
b)
small object to a big object.
c)
warm object to a cold object.
d)
large object to a small object.
57.
Heat is the movement of ______.
a)
radiation
b)
thermal energy
c)
cold
d)
fire
58.
Which direction is heat flowing in the picture?
a)
from the hand to the ice
b)
from the ice to the hand
c)
heat is not being transferred
d)
there is no way to tell
59.
In an exothermic reaction, heat is ...
a)
taken in
b)
given out
60.
what is an example of exothermic?
a)
firework
b)
ice pack
c)
coal
d)
wood
61.
In an endothermic reaction, heat is ,,,
a)
taken in
b)
given out
62.
Is photosynthesis an exothermic or endothermic reaction?
a)
Endothermic
b)
Exothermic
100 %
