Energy changes Flashcards
1
Q
Exothermic energy where
A
Surroundings
2
Q
Endothermic energy where
A
take in
3
Q
Energy conserved in chemical reactions?
A
yes
4
Q
Combustion reaction
A
Exothermic
5
Q
Oxidation reaction
A
Exothermic
6
Q
hand warmers xn
A
Endothermic
7
Q
ice pack xn
A
endothermic
8
Q
A substance which can be dissolved
A
“Soluble”?
9
Q
A substance which cannot be dissolved
A
“Insoluble”?
10
Q
2 solutions and an insoluble solid makes
A
Precipitate
11
Q
salts of sodium s/i
A
Soluble
12
Q
What are Nitrates? s/i
A
Soluble
13
Q
Precipitates and partner relationship
A
They swap partners
14
Q
consists only of one element or one compound
A
Pure
15
Q
Impure compounds have a range of melting points and boiling points?
A
Yes
