AnswersCHS Chemistry AEvidence of Chemical Reactions

Evidence of Chemical Reactions Answers

19 verified answers2 views
1
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Bread dough rising:

A
gas formation
B
color change
C
light emission
2
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Bread toasting:

A
gas formation
B
color change
C
light emission
3

Question text not available

Answers:
Selection 1:no
Selection 2:yes
4

Newspaper yellowing in the sunlight:yes no

A
yes
B
no
5

Meat cooking:

A
gas formation
B
color change
C
light emission
6

Question text not available

Answers:
Selection 1:yes
Selection 2:no
7

Baking cake batter:yes no

A
yes
B
no
8

Which of the following is the correct word equation to illustrate this reaction?

A
baking soda + vinegar carbon dioxide + water + sodium acetate
Option A
B
baking soda + water carbon dioxide + vinegar + sodium acetate
Option B
C
baking soda + vinegar + carbon dioxide + water + sodium acetate
Option C
D
baking soda + carbon dioxide + water + sodium acetate
Option D
9

Bread dough rising:

A
gas formation
B
color change
C
light emission
10

Meat cooking:

A
gas formation
B
color change
C
light emission
11

Baking cake batter: Shredding paper:

Answers:
Selection 1:yes
Selection 2:no
12

Fireworks exploding:

A
gas formation
B
color change
C
light emission
13

Shredding paper:yes no

A
yes
B
no
14

Bread toasting:

A
gas formation
B
color change
C
light emission
15

Fireworks exploding:

A
gas formation
B
color change
C
light emission
16

Shredding paper:

Answer not available
17

Twisting metal wire:yes no

A
yes
B
no
18

Twisting metal wire: Newspaper yellowing in the sunlight:

Answers:
Selection 1:no
Selection 2:yes
19

Newspaper yellowing in the sunlight:

Answer not available

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