C3 Flashcards
1
Q
What happens during a chemical reaction?
A
No atoms are destroyed, no atoms are created
2
Q
What number for each atom is on both sides of the equation?
A
The same number
3
Q
Is mass lost or gained during a reaction
A
No mass is conserved
4
Q
If mass seems to change there’s usually a… involved
A
Gas
5
Q
(S)
A
Solid
6
Q
(L)
A
Liquid
7
Q
(G)
A
Gas
8
Q
(Aq)
A
Aqueous ( dissolved in water)
9
Q
Exothermic
A
Gives out heat to surrounding area/increase heat
10
Q
Endothermic
A
Takes in heat energy from surroundings/ decrease heat in surrounding areas
11
Q
What’s the equation for neutralisations?
A
Acid+ alkali → salt + water
