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Chemistry Unit 2- Reactions > Rando > Flashcards

Flashcards in Rando Deck (33)
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1

polyatomic ions:

group of ions that have an overall charge

2

polyatomic ions can have

multivalent metals as well. be careful about writing roman numerals

3

binary acids

binary acids have HYDRO + ic

4

ite

aight= homogenous= ous

5

synthesis reactions can be

combustion reactions too. if they react with oxygen

6

incomplete combustion products

combustion produces c, co, co2 and water

7

hydrates

contain one or more water molecules in their crystal structures. you write as Cu x __h20. this is called copper either dehydrate, trihydrate, tetrahydrate etc. based on coefficient

they are loosely bonded to the water and can be broken upon heating. water is responsible for the blue colour in copper molecules. when it is not hydrated, it is called anhydrous. this produces an anhydrous salt. if water is added to the anhydrous salt again, it will become hydrated

8

colour of solution- neutralization

there is an excess of either base or acid in that reaction

9

cocl2 is used to test for

water. it is an anhydrous salt

10

lime water Ca(OH)2

used to test for CO2

11

metal oxide plus water

is a synthesis reaction which produces a base

12

When a metal reacts with water

the products are metal hydroxide (base) and hydrogen gas.

13


non-metal oxide plus water

is a synthesis reaction which produces an acid

14

A metal hydroxide decomposing

into a metal oxide and water

15

complete ionic eqn:

splits all compounds that are aq into ions. leave solid as solid and gas as gas

16

net ionic eqn:

cancels out spectator ions to show what actually reacted

17

two aqueous solutions reacting

NR

18

don't forget... ionic eqns

write states of ions in net and complete ionic eqns

19

balancing eqn

when balancing eqns, the coefficients can be reduced

20

how soap works

soap has hydrophilic and phobic tails. they surround and isolate the oil particles from the water long enough that they can be easily wiped away
- you need a fat source and a strong base to produce soap

21

nonmetal dioxide + dioxide

→ nonmetal trioxide

22

decomposition reactions rarely result in

single elements unless it is the reverse of a synthesis reaction that formed an ionic compound

23

carbon dioxide often reacts to form a compound containing

a carbonate. the reverse is also common.

24

what is always solid

metal oxides are always solid. all metal elements are solid

25

other state stuff

mercury and bromine are liquid at room temperature

HOFBrINCl and noble gases are gases

26

acids and bases decompose into

base decomposes into metal oxide and water
acid decomposes into nonmetal oxide and water

27

when writing combustions

must write complete or incomplete combustion

28

rando things

read subscripts vs charges on polyatomic ions carefully.

be careful about hydro vs. hypo

29

spectator ion

present in solution but not included in a chemical reaction

30

acid + carbonate

water and co2