matter Flashcards
1
Q
properties of matter (2)
A
- has mass (kg)
- takes up space (ml or cm cubed)
2
Q
pure substance meaning (1)
A
made of 1 type of particle (atom/molecule)
3
Q
impure substance meaning (1)
A
made of more than 1 type of particle
4
Q
element meaning (1)
A
made of 1 type of atom
5
Q
diatomic elements
A
H; N; O; halogens (Cl; F; Br; I)
6
Q
types of element (2)
A
- metal
- non-metal
7
Q
subatomic particles (3)
A
- neutron (0)
- proton (+)
- electron (-)
8
Q
nucleus of atom (2)
A
contains proton and neutron
doesnt move
9
Q
electrons (2)
A
outside nucleus
always moving
10
Q
neutron formula (1)
A
mass number-proton number
11
Q
electron formula (1)
A
proton no. x -1
12
Q
values on periodic table (2)
A
smaller no. = proton no.
bigger no. = mass no.
