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Flashcards in Reactions Test Deck (35)
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1

Example of chemical reaction

Burn a piece of paper, you can't get the piece of paper back

2

What are reactants?

The original substances in a reaction

3

What are products

The new substances formed in a reaction

4

What's an indication that new substance is produced

Color change

5

What's a chemical equation?

A symbolic description of a chemical reaction

6

What are chemical formulas

Represent reactants and products

7

What are examples of chemical formulas

Polyatomic ions, hydrogen H2, oxygen O2, H2O water

8

What does the plus sign do in a chemical formula

Separates multiple reactants or multiple products

9

What is the arrow in a chemical formula

Separates reactants from products, splits equation in two halves
Yields or produces

10

H2+O2->H2O is an example of

Chemical equation with chemical formulas

11

What do state of matter symbols do

Indicate if a substance exists as a solid, liquid, gas, aqueous, or precipitiate

12

What are the state of matter symbols (Solid, liquid, gas, aqueous, precipitate)

S, l, g, aq, ppt

13

What does aqueous and precipitate mean

Dissolved in water (aqueous)
Solid formed in chemical reaction (precipitate)

14

What's the memory trick for diatomic molecules

HON-7

15

What are coefficients

Represent the relative amounts of reactants and products
Represent the number of molecules or moles of a substance

16

What's the law of conservation of mass

Mass is neither created nor destroyed in normal chemical reactions
(Reworded) the total mass of reactants equals the total mass of the products equals the same number of atoms
BALANCED EQUATIONS FOLLOW THIS RULE

17

Know how to...

Balance equations

18

In terms of energy content, what are the two kinds of reactions

Exothermic, endothermic

19

What's an exothermic reaction?

A reaction in which energy is released to the surroundings , the temperature of surroundings increases (gets hotter), the energy content of products is less than energy content of the reactants

20

Know how to draw

Exothermic reaction charts

21

What's an endothermic reaction?

A reaction in which energy is absorbed from the surroundings , the temperature of the surroundings decreases, the energy content of products is greater than the energy content of the reactants

22

Know how to draw...

Endothermic reaction charts

23

What's a synthesis reaction

Combine
Combine multiple substances to produce single, more complex, product

24

What's a decomposition reaction

The breakdown of a single compound to produce two or more simpler substances
1 reactant

25

What's a single displacement reaction

Reaction in which a single element reacts with a compound , active elements replace less active elements

26

What's a double displacement reaction

2 elements switch partners
Occurs in ionic compounds
Reactions in which 2 elements in different compounds exchange places

27

Combustion reaction

The reaction of a compound with O2 to form oxides and water

28

Oxide

Compound containing oxygen

29

Know examples of...

Synthesis, decomposition, single displacement, double displacement, and combustion reactions

30

Know how to write and balance

All the types of equations studied (synthesis, decomposition, single displacement, double displacement, combustion)

31

What is a chemical reaction?

A chemical change in which substances react to form new substances with new properties

32

Know...

Polyatomic ions

33

Silver is

Ag+1

34

Zinc is...

Zn+2

35

Only use activity series with...

Single replacement