AnswersAA-F26 Physical ScienceDescribing Chemical Reactions

Describing Chemical Reactions Answers

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64843

Identify each part of this chemical equation, which describes the breakdown of water into hydrogen and oxygen.

Answers:
A (the entire green box)::chemical equation
B (the blue box)::reactants
C (the arrow)::reacts to form
D (the purple box)::products
64844

chemical equationproductsreacts to form✔ reactants

A
chemical equation
B
products
C
reacts to form
D
✔ reactants
64845

chemical equationproducts✔ reacts to formreactants

A
chemical equation
B
products
C
✔ reacts to form
D
reactants
64846

chemical equation✔ productsreacts to formreactants

A
chemical equation
B
✔ products
C
reacts to form
D
reactants
64860

When sugar is burned, water vapor and carbon dioxide are produced.

Answers:
Sugar has carbon atoms.:12
Sugar has hydrogen atoms.:22
Sugar has oxygen atoms.:11
64861

1112✔ 222435

A
11
B
12
C
✔ 22
D
24
E
35
64862

✔ 1112222435

A
✔ 11
B
12
C
22
D
24
E
35
64864

42✔ 8

A
4
B
2
C
✔ 8
64865

Calcium carbonate can break down to form calcium oxide and carbon dioxide.CaCO3 → CaO + CO2The oxygen atoms on the product side are

A
not balanced because there are only two oxygen atoms in CO2
B
not balanced because there is only one oxygen atom in CaO.
C
balanced because the total number of oxygen atoms is 3.
D
balanced when a coefficient of 3 is placed in front of CO2.
64866

42✔ 8

A
4
B
2
C
✔ 8
64867

When sugar is burned, water vapor and carbon dioxide are produced.

Answers:
Sugar has carbon atoms.:12
Sugar has hydrogen atoms.:22
Sugar has oxygen atoms.:11

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