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Chapter 3 Section #2

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Last updated over 3 years ago
13 questions
16
10
1
2
2
10
2
2
18
2
2
2
2
Question 1
1.

Question 2
2.

For each item in Column A, write the letter of the matching item in Column B.

Draggable itemarrow_right_altCorresponding Item
Shows the relationship between the reactants and products in a chemical reaction
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products
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chemical change
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Question 3
3.

In a laboratory, 178.8 g of water is separated into hydrogen gas and oxygen gas. The hydrogen gas has a mass of 20.0 g. What is the mass of the oxygen gas produced? Chemical equation H2O --> H2 and O2

Question 4
4.

As temperature and __________ change, most substances undergo a change from one state (or phase) to another.

Question 5
5.

Melting and formation of a gas are both __________________ changes and phase changes.

Question 6
6.

Question 7
7.

The new substances formed in the reaction have different ____________________ and different properties from the substances present before the reaction occurred.

Question 8
8.

In chemical reactions, the starting substances are called _______________________, and the new substances formed are called products.

Question 9
9.

Question 10
10.

The law of conservation of mass states that mass is neither created or _________ during a chemical reaction--it is conserved.

Question 11
11.

According to the law of conservation of mass, mass of the reactants equals the mass of the products.

Question 12
12.

French scientist Antoine ________________ (1743-1794) was one of the first to use ana analytical balance to monitor chemical reactions.

Question 13
13.

The color change and production of a ____ are indicators of a chemical reaction.

Categorize each term as either a physical or chemical change.
vaporize
grind
melt
condense
crumple
tarnish
explode
rust
burn
freeze
oxidize
crush
corrode
rot
ferment
boil
Physical Change
Chemical Change
The new substances that are formed in a chemical reaction
A chemical reaction that involves one or more substances changing into new substances
chemical equation
States that mass is neither created nor destroyed in any process
law of conservation of mass
The starting substances in a chemical reaction
reactants
Which terms below are used to describe phase changes in matter.
vaporize
condense
tarnish
melt
boil
freeze
explode
react
Which of the following terms represent terms referring to chemical reactions
rust
boil
oxidize
burn
corrode
tarnish
ferment
rot
decompose
freeze
sublimation
decomposition
explode