Chemical Reactions Flashcards
1
Q
What do atoms do when they react?
A
Give, take or share electrons
2
Q
What does this form?
A
Ions
Molecules
3
Q
What consists of ions?
A
Compounds formed from metals and non metals?
4
Q
What consists of molecules?
A
Compounds formed by just non metals
5
Q
How are atoms held together in molecules?
A
By covalent bonds
6
Q
Metals …… electrons to form ………. ions
A
Lose
Positive
7
Q
Non metals ……… electrons to form ………. ions
A
Gain
Negative
8
Q
How are chemical reactions represented?
A
Word or symbol equations
9
Q
How many atoms are lost/gained during a chemical reaction?
A
Non
10
Q
This means that:
……………… = …………….
A
Mass of products = mass of reactants
