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Flashcards in unit 2 test Deck (21)
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1

what elements are diatomics

H, N, O, F, Cl, Br, I, At.

2

what state are ionic compounds found in?

always solid, unless in water

3

what is a combustion reaction

a reaction with a substance (hydrocarbon) and oxygen

4

what are the reactants of a complete combustion

CO2 + H2O

5

what are the reactants of a incomplete combustion

H2O, CO, C, CO2

6

What are the rules to the general solubility guidelines?

Higher guideline takes charge, mind the exceptions though.

7

What is the rule for halogens in displacement reactions

The highest halogen has all the control. (F can displace everything below it, but Cl can’t displace F) ((does that make sense?)) ((yes it does))

8

How does the activity series of metals work?

Highest metals have the most power. Second section can displace hydrogen in only acids, whereas first can displace hydrogen in both acids and water.

9

What order do you balance equations

Leave O and H till the end. Keep polyatomic ions together if they are together in the reaction ( CO3-1, not C-1 and O-3)

10

Where do most reactions take place?

In an aqueous solution

11

Things to look for when doing Single Displacement reactions

Activity series- can there even be a reaction.

12

How can you tell if a Double Displacement reaction has taken place?

A precipitate forms
A gas forms
Water forms

13

what gives you water in a double displacement

an acid and a base reacting

14

what compounds turn to gas and water?

H2SO3 makes SO2 and H2O
H2CO3 makes CO2 and H2O
NH4OH makes NH3 and H2O

15

what gasses can be formed in a Double Displacement reaction

H2,H2S, SO2, CO2, NH3

16

what happens when synthesis reactions happen

energy is released

17

what is required for some decomp reactions?

energy such as heat or electricity

18

what states are covalent/molecular compounds usually found in?

as a gas (usually)

19

first section of series of metals

can displace H in all situations

20

second section of series of metals

can only displace H from acids

21

third section of series of metals

never displaces H