Chapter 3 Section #2

Last updated over 3 years ago

13 questions

16

10

1

2

10

2

18

2

Library

Chapter 3 Section #2

Last updated over 3 years ago

13 questions

16

10

Draggable item		Corresponding Item

1

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

2

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

2

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

10

2

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

2

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

18

2

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

2

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

2

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

Categorize each term as either a physical or chemical change.

boil
freeze
tarnish
rot
corrode
oxidize
explode
rust
vaporize
condense
melt
grind
ferment
burn
crush
crumple

Physical Change
Chemical Change

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

Draggable item		Corresponding Item
A chemical reaction that involves one or more substances changing into new substances		products
Shows the relationship between the reactants and products in a chemical reaction		chemical change
The starting substances in a chemical reaction		chemical equation
The new substances that are formed in a chemical reaction		law of conservation of mass
States that mass is neither created nor destroyed in any process		reactants

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

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

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

Which terms below are used to describe phase changes in matter.

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

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

Which of the following terms represent terms referring to chemical reactions

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

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

True

False

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

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

Categorize each term as either a physical or chemical change.

boil

freeze

tarnish

rot

corrode

oxidize

explode

rust

vaporize

condense

melt

grind

ferment

burn

crush

crumple

Physical Change

Chemical Change

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

A chemical reaction that involves one or more substances changing into new substances

products

Shows the relationship between the reactants and products in a chemical reaction

chemical change

The starting substances in a chemical reaction

chemical equation

The new substances that are formed in a chemical reaction

law of conservation of mass

States that mass is neither created nor destroyed in any process

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

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

True

False