Question

Question 6 (Multiple Choice Worth 3 points)

How would you expect energy to change during a chemical reaction?

Energy will be increased.
Energy will be decreased.
Energy will be converted into another form.
Energy will be consumed.

@Sinon @kevindragonlord

Answer 1

@Alfa_female

Answer 2

@monkeys

Answer 3

C

Answer 4

Can you help with this one? I've tried to figure it out

When sodium and oxygen react to form an ionic compound, the mass of the compound ____ the sum of the masses of the individual elements.

is less than
is greater than
is equal to
can be greater than or less than

Answer 5

C

Answer 6

When a substance evaporates, what happens to the mass?

The mass increases as it changes from a liquid to a gas.
The mass decreases as it changes from a liquid to a gas.
The mass stays constant as it changes from a liquid to a gas.
There is no mass once the substance becomes a gas.

Its B, Right? This is my last one

Answer 7

no C the mass stays the same but it spreads out

Answer 8

Oh ok thanks

Answer 9

as it turns into a gas

Answer 10

Your welcome :3

Answer 11

YAYY :3

Answer 12

haha well anytime you need help don't hesitate to ask

Answer 13

:3 Same

Answer 14

will do :p

Answer 15

Wait! I've attempted this test a billion times and never got it right! Can you help?

Answer 16

A chemical change changes the ____________ of a substance.

shape
size
mass
identity x My answer

Answer 17

@monkeys ?

Answer 18

yeah

Answer 19

Is my answer right?

Answer 20

yes

Answer 21

Kay..
All of the following require breaking and forming chemical bonds except:

Freezing ice
A plant decaying x
A piece of silver tarnishing
Roasting a marshmallow

Answer 22

yeah your right its b

Answer 23

kay

Which of the following does not happen during a chemical change?

Mass is gained. x
New compounds are formed.
Old compounds are broken down.
Bonds are broken.

Answer 24

correct mass stays the same doing reactions

Answer 25

Yay!
All of the following are indicators of a chemical change except:

Heat production
Color change
Phase change X
Bubbling or fizzing

Answer 26

Right so you do know science xD

Answer 27

Then how the f*ck do I keep failing this one?! O_O

Which of the following is not an example of a chemical change?

Food digesting
Water evaporating X
A car rusting
An egg cooking

Answer 28

its A while that seems weird there are no indicators of a chemical change

Answer 29

When a substance goes from a gas to a liquid, it goes through a ________ change.

chemical
phase X
bond
ionic

Answer 30

ZCorrect

Answer 31

Baking soda fizzing in vinegar is an example of a

phase change.
chemical change. X
nuclear change.
physical change.

Answer 32

Yep :3

Answer 33

Physical changes

are only caused through burning a material.
cannot be detected by the naked eye.
do not change the identity of the substance.
change the identity of a substance X

Answer 34

D

Answer 35

Two more Well after this one its one

Chemical changes

are only caused through burning a material.
only occur to weak materials.
change the identity of a substance.
do not affect the identity of a substance. X

Answer 36

yes its D

Answer 37

Which of the following is an example of a chemical change?

Melting ice cream
Burning paper X
Freezing water
Evaporating rubbing alchohol

Answer 38

yep

Answer 39

Freaking thing wont let me submit it!

Answer 40

haha wow