Ch 7

Question 1

What is the formation of solid in a previously clear solution

Answer 1

Precipitation reaction

Question 2

What is it called when the formation of gas is evidence of a chemical reaction

Answer 2

Gas evolution reaction

Question 3

Is there a indefinite signs of a chemical change

Answer 3

No, there is a definite

Question 4

What do we represent a chemical reaction with

Answer 4

Chemical equation

Question 5

What side is the product on

What side is the reaction on

Answer 5

Product-left

Reaction-right

Question 6

A chemical equation in which the number of each element has teh same amount on both sides

Answer 6

Balanced equation

Question 7

To balance equations what to we insert

Answer 7

Coefficients

Question 8

What cant you change to balance an equation

Answer 8

Subscript

Question 9

What is an aqueous solution

Answer 9

Homogeneous mixture of a substance with water

Question 10

T/F water can conduct electricity

Answer 10

F can not conduct electricity

Question 11

Ions in a sodium chloride studio conduct electricity, causing the light to light up. Solutions such as NaClare called strong

Answer 11

Electrolyte solutions

Question 12

What is a solution containing a solute that dissociates into ions; therefore, a solution that conducts electricity well.

Answer 12

Strong electrolyte solution

Question 13

Dissolves in solutions

Answer 13

Soluble

Question 14

doesn’t dissolve in water

Answer 14

Insoluble

Question 15

A set of empirical rules used to determine whether an ionic compound is soluble

Answer 15

Solubility rules

Question 16

A reaction that forms a solid or precipitate when two aqueous solutions are mixed.

Answer 16

Precipitation reactions

Question 17

An insoluble product formed through the reaction of two solutions containing soluble compounds.

Answer 17

Precipitate

Question 18

T Only insoluble compounds form precipitates

Answer 18

T precipitates

Question 19

chemical equation showing all the species as they are actually present in solution

Answer 19

Complete ionic equation

Question 20

Ions that do not participate in a reaction; they appear unchanged on both sides of a chemical equation.

Answer 20

Spectator ions

Question 21

An equation that shows only the species that actually participate in a reaction

Answer 21

Net ionic equation

Question 22

A chemical equation showing the complete, neutral formulas for every compound in a reaction

Answer 22

Molecular equation

Question 23

reaction that forms water and typically a salt.

Answer 23

Acid-base reaction

Question 24

A reaction that occurs in solution and forms a gas as one of the products.

Answer 24

Gas evolution reaction

Question 25

What are acid base reactions also called

Answer 25

Neutralization reaction

Question 26

An ionic compound that usually remains dissolved in a solution after an acid-base reaction has occurred.

Answer 26

Salt

Question 27

A reaction in which electrons are transferred from one substance to another.

Answer 27

Oxidation reduction reaction/ redox reactions

Question 28

T/F redox reactions are responsible for rust, bleaching hair, and the electricity in batteries

Answer 28

T

Question 29

T/F redox reactions never involve the reaction of the substance oxygen

Answer 29

F usually

Question 30

Oxidation means

Answer 30

loss of electrons

Question 31

Reduction means

Answer 31

Gain of electrons

Question 32

Reds 3 rules

Answer 32

1. )instance reacts with element oxygen 2. ) metal reacts with nonmetal 3. ) more generally, one substance transfers electrons to another substance

Question 33

A reaction in which a substance reacts with oxygen, emitting heat and forming one or more oxygen-containing compounds.

Answer 33

Combustion reaction

Question 34

What are some signs of chemical reaction

Answer 34

``` Color changes Formation of a solid Formation of a gas Heat emission/ absorption Light emission ```