Question 1
All things that exist are made up of
atoms
Which part of an atom is said to have a positive charge
proton
Which part of the atom is said to have a negative charge
electron
Which part of the atom has no charge
neutron
What is the smallest particle that makes up an element
atom
What determines the atom's identity
number of protons
Electrons, protons, and neutrons make up an
atom
How many amu does a proton and neutron have
1 amu
How many amu does the electrons have
1/2000 amu
Protons + Neutrons =______
Mass
Electrons =_____
volume (which is empty space)
Protons and electrons determine the _________of an atom
reactivity
7 protons
8 electrons What is the charge?
-1
If you change the # of neutrons of an atom, you change the_______
isotope
Any particle smaller than an atom is called ______
subatomic particle
If an atom has 4 positively charged subatomic particles, what must it have to become a neutral atom
4 electrons
The atomic number is determined by _____
The number of protons
What two basic particles form the nucleus of an atom
Protons and neutrons
18 Protons
12 electrons What is the charge
+6
15 Protons
18 electrons What is the charge
-3