WorksheetsTest #2 Physical and Chemical Changes + States of Matter p4
Total questions: 31
Worksheet time: 16mins
Name
Class
Date
1.
In the "Egg in A Flask" phenomenon, the hot plate converted electrical energy into __________ energy in order to heat up the water in the flask by conduction.
a)
chemical
b)
thermal
c)
nuclear
d)
atomic
2.
This is a state of matter in which the particles are most packed together and are said to vibrate in place (move the least).
a)
solid
b)
liquid
c)
gas
3.
A physical change rearranges the substance into a new substance. Chemical changes change the appearance of a substance but not the identity of the substance. True or false?
a)
True
b)
False.
4.
These are used to describe a substance without changing the identity of the substance.
a)
physical properties
b)
chemical properties
c)
flammibility
5.
Which is NOT an example of a physical property?
a)
melting point
b)
odor
c)
density
d)
flammability
6.
The identity of a substance is determined by its
a)
physical properties
b)
chemical properties
c)
arrangement of the atoms and bond strength
d)
all of these options
7.
How fast or slow the molecules are moving in a substance
a)
kinetic energy
b)
thermal energy
c)
atomic energy
d)
nuclear energy
8.
To change a substance from a gas to a liquid, you must _____ thermal energy(heat).
a)
add
b)
remove
c)
matter
d)
nonmatter
9.
In order to change a solid into a liquid, you must ______ thermal energy (heat).
a)
add
b)
remove
c)
matter
d)
nonmatter
10.
In order to change a gas into a liquid, you must _________ heat.
a)
add
b)
remove
11.
Increasing the kinetic energy of the particles in a substance will cause the _______ of a substance to also increase.
a)
boiling point
b)
temperature
c)
appearance
d)
melting point
12.
Which substance has the highest kinetic and thermal (heat) energy in the picture?
a)
Substance A
b)
Substance B
c)
Substance C
d)
Substance D
13.
Which substance in the picture are the particles moving the slowest?
a)
Substance A
b)
Substance B
c)
Substance C
d)
Substance D
14.
The particles in a gas fill up the container that they are in. Another way to say this is...
a)
the particles are spread out and take up all of the space in the container
b)
the particles are close together and can move past each other
c)
the particles occupy a definite (fixed) space (volume)
d)
the particles can only vibrate where they are and cannot move past each other
15.
In the "Egg in a Flask" phenomenon, the water molecules' kinetic and thermal energy increased when the flask was
a)
on the hot plate
b)
off of the hot plate
16.
In the "Egg in a Flask" phenomenon, the water molecules LOST thermal and kinetic energy when...
a)
the flask was taken off of the hot plate
b)
the flask was put on the hot plate
17.
The egg was sucked into the flask because...
a)
the gas water molecules lost energy and turned back into a liquid
b)
liquid takes up less space than a gas, which sucked the egg down into the flask
c)
all of these help explain the phenomenon
d)
adding and then removing thermal energy to the water molecules made the water molecules speed up and then slow down, causing a change of state
18.
What does it mean when two unknown substances have the same density but do NOT necessarily look exactly the same?
a)
they are the same substance
b)
they are different substances
c)
not enough information to tell
19.
The mass of liquid A is 10g and the mass of liquid B is 5g. Both liquids are occupying the same amount of space (volume). Do they have the same density?
a)
Yes, they have the same density and are therefore the same substance.
b)
No, they do not have the same density and are therefore different substances.
c)
They have different densities but are the same substance.
d)
Not enough information to tell.
20.
A 20g substance has a volume of 5ml. What is the density?
(D=m/v)
(D=m/v)
a)
4g
b)
4ml
c)
4g/ml
d)
40g/ml
21.
Density is measured in
a)
grams (g)
b)
milliliters (ml)
c)
grams per milliliter (g/ml)
d)
degrees celcius (°C)
22.
What state of matter do the particles move the fastest (highest kinetic energy) and are the most spread out (take up the most space)?
a)
solid
b)
liquid
c)
gas
d)
egg
23.
What state of matter are the particles moving the slowest (least kinetic energy) and are the most packed together (most dense)?
a)
solid
b)
liquid
c)
gas
d)
egg
24.
The molecules in the image are widely spaced and are moving fast. What state of matter are these molecules in?
a)
solid
b)
liquid
c)
gas
d)
egg
25.
The molecules in the image are moving fast and are spread apart. Which state of matter are the molecules in?
a)
solid
b)
liquid
c)
gas
d)
egg
26.
The molecules in the image are packed tight and are vibrating in place. What state of matter are the molecules in?
a)
solid
b)
liquid
c)
gas
d)
egg
27.
Substance A mass= 47g
Substance A volume= 10g
D=m/v
What is the density of substance A?
Substance A volume= 10g
D=m/v
What is the density of substance A?
a)
4.7g/ml
b)
.47g/ml
c)
.047g/ml
d)
470g/ml
28.
A chemical change changes the substance into a new substance. A physical change changes the appearance of a substance but not the identity of the substance. True or false?
a)
True
b)
False
29.
Substance B mass= 6.7g
Substance B volume= 10ml
D=m/v
What is the density of substance B?
Substance B volume= 10ml
D=m/v
What is the density of substance B?
a)
67g/ml
b)
.067g/ml
c)
.67g/ml
d)
6.7g/ml
30.
The egg was sucked into the flask because
a)
liquid takes up less space than gas, leaving more room for the egg
b)
the gas molecules lost thermal and kinetic energy in the ice bath
c)
the change of phase from a gas back into a liquid in the flask
d)
all of these reasons help explain the phenomenon
31.
In order to change a liquid into a solid, you must ________ heat.
a)
remove
b)
add
100 %
