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Chem/Changes in Matter CA REVIEW

Total questions: 64

Worksheet time: 39mins

Name
Class
Date
1.
What does it mean to be "Soluble" ?
a)
Capable of being a solid.
b)
To have soul.
c)
Capable of being dissolved.
d)
To sink.
2.

The sugar cubes are called the

a)

solute

b)

solvent

3.

The water is called the

a)

solvent

b)

solute

4.

A solution with high amount of solute

a)

concentrated

b)

saturated

c)

unsaturated

d)

diluted

5.

What kind of mixture is shown in the picture?

a)

Homogeneous

b)

Heterogeneous

6.

What kind of mixture is shown in the picture?

a)

Homogeneous

b)

Heterogeneous

7.

The type of mixture in which the components mixed are uniformly distributed throughout the mixture is called

a)

homogenous mixture

b)

heterogenous mixture

c)

components

d)

compound

8.
Which cube(s) has the most surface area?
a)
left cube
b)
middle cubes
c)
right cubes
9.
True or false: The smaller the particle size(large surface area per unit volume) means...
a)
increase in solubility
b)
decrease in solubility
10.
Stirring the solution increases or decreases the solubility?
a)
increases
b)
decreases
11.

Which of the following factors affects solubility?

a)

temperature

b)

agitation

c)

surface area

d)

all of the above

12.
a)

solvent

b)

solute

13.
a)

solute

b)

solvent

14.
The speed at which something dissolves is called 
a)
Rate
b)
Solution 
c)
Solute
d)
Surface area
15.
We can increase the rate a solute will dissolve by 
a)
Heating it, Crushing it Stirring it
b)
Heating it, cooling it crushing it
c)
Stirring it, Crushing it cooling it
d)
Smelling it, crushing it, stirring it
16.
What part of a particle touches the water
a)
The inside 
b)
outside
c)
both inside and outside
d)
neither the inside nor outside
17.
The amount of a substance that is in contact iwth another substances is called 
a)
surface area
b)
particle size
c)
temperature
d)
crushing
18.
Molecules move faster, resulting in solvent molecules colliding with the solute more frequently
a)
surface area
b)
particle size
c)
temperature
d)
crushing
19.
Increasing the temperature of a solvent will __________ the rate at which all solid solutes dissolve
a)
Increase 
b)
Decrease
c)
Increase then decrease
d)
decrease then increase
20.
Which sample of sugar dissolves the fastest
a)
sugar cubes in cold tea
b)
granulated sugar in cold tea
c)
sugar cubes in hot tea
d)
granulated sugar in hot tea
21.
How fast something dissoves is called the 
a)
solubility of a substance
b)
mount of solute 
c)
Strength of the solution
d)
Rate of dissolving
22.
An increase in the rate of dissolving is caused by a decrease in the the
a)
temperatur
b)
particle size
c)
amount of stirring
d)
surface area
23.

Which solution is the most diluted?

a)

Solution A

b)

Solution B

c)

Solution C

d)

None of the above

24.
Number of C's in 2Na₂CO₃
a)
1
b)
2
c)
3
d)
5
25.
How many Elements are in the compound C2H8O ?
a)
2
b)
1
c)
3
d)
0
26.
How many total atoms are in the compound C2H8O ?
a)
11
b)
2
c)
8
d)
1
27.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
28.
How many Chlorine are in MgCl2?
a)
2
b)
1
c)
3
29.
How many Magnesium are in 10MgCl2?
a)
10
b)
5
c)
20
30.
Number of N in (NH₄)₂CrO₄
a)
1
b)
2
c)
8
d)
16
31.

What is a small particle that is known as the basic building block of matter?

a)

molecule

b)

compound

c)

element

d)

atom

32.

Two oxygen atoms bond together, which vocabulary word best describes this type of matter?

a)

molecule

b)

compound

c)

element

d)

atom

33.

H2O is most accurately described as a ___________________.

a)

molecule

b)

compound

c)

element

d)

atom

34.

Which of the following is the most accurate statement?

a)

everything is both a molecule and a compound

b)

nothing can be both a molecule and a compound

c)

all compounds are also molecules

d)

All molecules are also compounds

35.

Oxygen, Nitrogen, Hydrogen, and Calcium are all examples of ______________________.

a)

molecules

b)

compounds

c)

atoms

d)

elements

36.

Which one of the following is a compound?

a)

NaCl

b)

O2

c)

Hydrogen

d)

He2

37.

Which of these is only a molecule and not a compound?

a)

a

b)

b

c)

c

d)

d

38.

Which of the following is different from the rest of the group? (choose the answer that best applies)


Nitrous Oxide (N₂O)

Ozone (O₃)

Carbon Dioxide (CO₂)

Dihydrogen Monoxide (H₂O)

a)

Ozone (O₃)

b)

Nitrous Oxide (N₂O)

c)

Carbon Dioxide (CO₂)

d)

Dihydrogen Monoxide (H₂O)

39.
What do we call a chemical substance made up of 2 or more different types atoms bonded together?
a)
formula
b)
atom
c)
subscript
d)
compound
40.
H2O2← ?
This number tells the number of atoms present.
a)
coefficient
b)
molecule
c)
subscript
d)
atom
41.
→2H2O
This number tells how many molecules are in a chemical equation.
a)
coefficient
b)
subscript
c)
compound
d)
element
42.
2H2O
How many H2O molecules are present?
a)
1
b)
4
c)
2
d)
8
43.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

44.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

45.
Bubbling is an example of a ________ change.
a)
Physical
b)
Chemical
46.
Glass breaking is an example of a __________ change.
a)
Physical
b)
Chemical
47.
Burning is a sign of a __________ change.
a)
Physical
b)
Chemical
48.
Boiling is an example of a __________ change.
a)
Physical
b)
Chemical
49.
Which of the following is a sign that a chemical reaction has occurred?
a)
change in shape
b)
melting
c)
formation of a gas
d)
dissolving
50.

The melting of wax is an example of a

a)

chemical change

b)

physical change

51.

When I mix 2 liquids and one floats on top of the other, Is this a physical or chemical change?

a)

physical

b)

chemical

c)

neither

d)

both

52.
Is copper tarnishing a physical or chemical change?
a)
Physical 
b)
Chemical
53.

What evidence in the picture indicates that a chemical change occurred?

a)

temperature change

b)

odor

c)

gas

54.

I mix a liquid with a solid and it fizzes. What evidence tells me that a chemical change occurred?

a)

It fizzes

b)

it is not a chemical change

c)

the liquid was mixed with the solid

d)

color change

55.

All of the following are evidence of a chemical change EXCEPT:

a)

a strong odor that wasn't present initially

b)

a change in size

c)

a solid is formed from 2 liquids

d)

a change in color

56.

What is the main difference between a chemical change and a physical change?

a)

chemical changes the substances identity; physical does not

b)

physical changes the substances identity; chemical does not

c)

chemical changes what it looks like; physical does not

d)

physical changes everything; chemical only changes some things

57.

Melting and boiling point are ______________ properties of a substance.

a)

physical

b)

chemical

c)

structural

d)

external

58.

“Adding salt to water changes the taste of water.” Which of the following statements is true regarding this change?

a)

It is a chemical change because a new substance is formed.

b)

It is a physical change because the original substance can be recovered

c)

It is a chemical change because the salt cannot be recovered.

d)

It is a physical change because there is a slight change in colour.

59.

Which is an example of a chemical change?

a)
b)
c)
d)
60.
Physical or Chemical change?
glucose dissolves in water
a)
Physical 
b)
Chemical
61.
Physical or Chemical change?
mixing sand and water
a)
Physical 
b)
Chemical
62.

Why does the rate of dissolving increase as the temperature increases?

a)

The solute molecules move faster at higher temperatures

b)

The solute particles become smaller at higher temperatures

c)

The solvent molecules become slower at higher temperatures

d)

What is the effect of agitation on the rate of dissolving?

63.

Why does a solute with a larger surface area dissolve faster?

a)

It has more solute surface area in contact with the solvent

b)

 It has fewer solute particles in contact with the solvent

c)

It has a higher temperature compared to other solutes

d)

It has a different color compared to other solutes

64.

What is the difference in dissolving time between a sugar cube and a teaspoon of granular sugar?

a)

Both dissolve at the same rate

The dissolving time depends on the temperature of the solvent

b)

The sugar cube dissolves faster

c)

The teaspoon of granular sugar dissolves faster

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