Definitions
The number that tells us how many protons are in the nucleus of an element
atomic number
Which element has an atomic number of 22?
titanium
Is gold a
a. mixture
b. element
c. compound
B - element
compound
how many neutrons does Mg have?
12
a negatively charged subatomic particle
electron
Which element has a mass of 27?
aluminum
What type of matter has a set shape and volume?
solid
homogenous
31
a subatomic particle that has no charge
neutron
Which element has 20 protons?
calcium
What type of matter has a set volume but no set shape?
liquid
oxygen is a...
element
How many neutrons does calcium-42 have?
22
the number that tells us how many protons and neutrons are in the nucleus of an atom
How many neutrons does potassium have?
20
Density .... is a physical or chemical property?
physical
soil is a.....
heterogenous mixture
What is the mass of nickel-60?
60
Name the 3 subatomic particles and the charges of them all
proton - positive
neutron - neutral
electrons - negative
Name 2 elements that would be able to form an ionic bond
The ability of iron to react with hydrochloric acid...is this physical or chemical?
chemical
the parts of a ______ can by physically separated.
a. element
b. compound
c, mixture
mixture
How many neutrons does 22688Ra have?
138