10 questions
What charge does a proton have?
positive
negative
neutral
What charge does a neutron have?
positive
negative
neutral
What charge does an electron have?
positive
negative
neutral
There are equal numbers of ___ and ___ in an atom (if it's neutral)
protons and neutrons
protons and electrons
neutrons and electrons
What two particles are in the nucleus of an atom?
protons and electrons
electrons and neutrons
protons and neutrons
How many protons does an atom of Sodium (Na) have?
12
11
23
The atomic number is the number of ____ in the nucleus. It's the element's "identification"!
electrons
neutrons
protons
What particle(s) make up the mass number?
electrons
neutrons
protons
protons and neutrons
What is the mass number of Phosphorous (P)?
15
30
31
16
If an atom's atomic number is 2 and has a mass of 4, how many neutrons does the atom have?
2
4
6
0