Ch 7 Flashcards Preview

Chemistry > Ch 7 > Flashcards

Flashcards in Ch 7 Deck (34)
Loading flashcards...
1

What is the formation of solid in a previously clear solution

Precipitation reaction

2

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

Gas evolution reaction

3

Is there a indefinite signs of a chemical change

No, there is a definite

4

What do we represent a chemical reaction with

Chemical equation

5

What side is the product on
What side is the reaction on

Product-left
Reaction-right

6

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

Balanced equation

7

To balance equations what to we insert

Coefficients

8

What cant you change to balance an equation

Subscript

9

What is an aqueous solution

Homogeneous mixture of a substance with water

10

T/F water can conduct electricity

F can not conduct electricity

11

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

Electrolyte solutions

12

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

Strong electrolyte solution

13

Dissolves in solutions

Soluble

14

doesn't dissolve in water

Insoluble

15

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

Solubility rules

16

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

Precipitation reactions

17

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

Precipitate

18

T Only insoluble compounds form precipitates

T precipitates

19

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

Complete ionic equation

20

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

Spectator ions

21

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

Net ionic equation

22

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

Molecular equation

23

reaction that forms water and typically a salt.

Acid-base reaction

24

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

Gas evolution reaction

25

What are acid base reactions also called

Neutralization reaction

26

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

Salt

27

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

Oxidation reduction reaction/ redox reactions

28

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

T

29

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

F usually

30

Oxidation means

loss of electrons

31

Reduction means

Gain of electrons

32

Reds 3 rules

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

33

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

Combustion reaction

34

What are some signs of chemical reaction

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