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unit 4 L1,2,3

Total questions: 39

Worksheet time: 26mins

Name
Class
Date
1.

Law of Conservation of Energy says-

a)

that energy CAN be created and destroyed - only converted from one form of energy to another.

b)

that energy CANNOT be created nor destroyed - only converted from one form of energy to another.

c)

energy is everywhere

d)

energy is NOT everywhere

2.

Microwave

a)

conduction

b)

convection

c)

radiation

3.

Tanning in the sun

a)

conduction

b)

convection

c)

radiation

4.

spoon in the soup

a)

conduction

b)

convection

c)

radiation

5.

Ironing

a)

conduction

b)

convection

c)

radiation

6.

Heat Transfer through liquids rising and sinking

a)

Conduction

b)

Convection

c)

Radiation

7.

Conduction

a)

heat transfer by Touch

b)

heat transfer by heat rising and sinking liquid particles

c)

heat transfer by Not Touching

8.
The Law of Conservation of Energy states:
a)
Energy can be created and destroyed but not transformed 
b)
Energy cannot be created or destroyed, it can only transformed
c)
Energy can't be created, destroyed or transformed
9.
Thermal energy ALWAYS moves from _____ to _____.
a)
solid to liquid
b)
ice to water
c)
hot to cold
d)
solid to gas
10.
______ occurs when a cooler, denser mass of a liquid or gas replaces a warmer, less dense mass of a gas or liquid
a)
Convection
b)
Conduction
c)
Radiation
11.
The total kinetic energy of particles that make up matter is called
a)
Heat
b)
Calorie
c)
Temperature
d)
Thermal Energy
12.
As you touch a hot stove the heat transfers -
a)
from your hand to the stove
b)
from the stove to your hand
c)
It doesn't transfer
13.
The transfer of thermal energy from one place to another by the the movement of fluids is
a)
convection
b)
conduction 
c)
radiation
d)
thermal energy
14.
The transfer of thermal energy through a substance by direct contact is called___.
a)
conduction
b)
insulation
c)
convection
d)
radiation
15.
Radiation is how energy from the sun is transferred to Earth.
a)
true
b)
false
16.
Energy that travels as electromagnetic waves is called ______
a)
conduction
b)
convection
c)
radiation
17.
The baby chickens are kept warm from the heat lamps.  This demonstrates what kind of heat transfer? 
a)
conduction
b)
convection
c)
radiation
18.
What is the total number of atoms present in 5Na3PO4
a)
5
b)
40
c)
55
d)
8
19.

How many Oxygen atoms are in 2SO4?

a)

1

b)

2

c)

4

d)

8

20.

Balance this equation:

H2 + Cl2 ---> HCl

a)

It is balanced.

b)

H2 + Cl2 ---> 2HCl

c)

3H2 + Cl2 ---> 6HCl

d)

H2 + 3Cl2 ---> 6HCl

21.

How many Mn atoms are found in the following compound?

2MnO4

a)

1

b)

2

c)

4

d)

8

22.
How many TOTAL atoms are in the following chemical formula?
3H2O
a)
7
b)
6
c)
9
d)
8
23.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
24.
Element or compound?
H2O
a)
element
b)
compound
25.
How many atoms of carbon (C) are in  C6H12O6?
a)
3
b)
6
c)
12
d)
24
26.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
27.

How many F atoms are in this compound?

MgF2

a)

2

b)

6

c)

8

d)

12

28.

How many total atoms are in this compound? Al2O3

a)

2

b)

5

c)

6

d)

3

29.
The law of conservation of mass states that....
a)
Matter can be made
b)
Matter can be destroyed
c)
Matter can neither be made or destroyed
d)
Matter can evaporate
30.
In this image, what are the information in red is called the_______.
a)
Product
b)
Reactant
c)
Chemical Subscript
d)
Coefficient
31.

Determine whether the following equations is balanced or unbalanced. H4 + O2 ---> 2H2O

a)

Balanced

b)

Unbalanced

32.

Determined whether the following equation is balanced or unbalanced. Ag + O2 ---> 2Ag2O

a)

Balanced

b)

Unbalanced

33.

6CO2+ 6H2O → C6H12O6 + 6O26CO_2+\ 6H_2O\ \rightarrow\ C_6H_{12}O_{6\ }+\ 6O_2  

The carbon atoms are balanced with ____ on each side of the reaction.

a)

1

b)

6

c)

2

34.
In the equation,          2Mg + O2 ---> 2MgO, which are the reactants?
a)
Mg and O
b)
MgO
c)
Mg and MgO
d)
O and MgO
35.
The substances listed on the right side of a chemical equation are the
a)
Yields
b)
Reactants
c)
Products
d)
Precipitates
36.
the starting materials in a chemical reaction
a)
Products
b)
Reactants
c)
Starters
d)
Enders
37.

Burning paper is an example of a

a)

boiling point

b)

chemical reaction

c)

extended structure

38.

In a chemical equation the products are on the right side of the arrow. Are the products the beginning substances or the ending substances?

a)

beginning

b)

ending

39.

A process in which atoms rearrange to form new substances.

a)

extended structure

b)

boiling point

c)

chemical reaction

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