C1:Atomic Structure not done Flashcards
1
Q
what are all substances made up of
A
Atoms
2
Q
How many groups are in the periodic table
A
8
3
Q
What does each group contain
A
Elements with similar chemical properties
4
Q
What do elements contain
A
Only one type of atom
5
Q
What do compounds contain
A
More than one type of atom
6
Q
What does an atom have in the centre
A
A nucleus
7
Q
What is the nucleus surrounded by
A
Électrons
8
Q
What doesn’t happen to atoms in reactions
A
No new atoms are created or destroyed
9
Q
what does the total mass of reactants equal to
A
The total mass of products
10
Q
What is on both sides of a balanced symbol equation
A
The same number of each type of atom
11
Q
(s)
A
solids
12
Q
(L)
A
Liquids
13
Q
(G)
A
Gases
14
Q
(Aq)
A
Aqueous solutions
15
Q
What is a mixture
A
Two or more substances that aren’t chemically combined together
