Pizza
a) element
b) compound
c) homogeneous mixture
d) heterogeneous mixture
heterogeneous mixture
Three subatomic particles that make up atom
protons neutrons and electrons
how many sig. fig.?
107.2
4
element name of Ne
Neon
Olaf
matter
Water
a) element
b) compound
c) homogeneous mixture
d) heterogeneous mixture
compound
Located inside of the nucleus and have a positive charge.
protons
how many sig. fig.?
0.502
3
element's name of Fe
iron
not matter
Copper penny
a) element
b) compound
c) homogeneous mixture
d) heterogeneous mixture
element
When an atom gains an electron it has this kind of charge
(positive or negative)
negative
how many sig. fig.?
0.982 x 10^-3
3
element's name of Sn
Tin
air
matter
Tap water
a) element
b) compound
c) homogeneous mixture
d) heterogeneous mixture
homogeneous mixture
The sum of protons and neutrons in the nucleus of an atom.
mass number
Convert to scientific notation
123,453
Cu
not a matter
A pure substance that cannot be separated into simpler substances by physical or chemical means
Element
This is the smallest subatomic particle.
electrons
Convert to scientific notation
3100.0 x 10^2
3.1000 x 105
Sb