periodic table
What is the lightest element.
Hydrogen
What is the center of the atom.
Nucleus
Rutherford’s model had what in the middle?
Nucleus
This particle has a positive charge.
Proton
Particles are always doing this.
moving
This element helps things burn.
Oxygen
The particles in the nucleus.
Protons and neutrons
Bohr’s model had what around the nucleus?
Rings
This tiny particle has no charge.
Neutron
When particles heat up, they do this.
Move faster
This metal is used in wires.
Copper
These move in energy levels.
Electrons
Atoms were proven to exist in what century?
19th
These two particles are in the nucleus.
Proton and neutron
Gases spread out because particles do what?
Move in all directions
This element is used in balloons.
Helium
Bohr rings are also called:
Energy levels
Atoms make up what?
Everything
A neutral atom has what charges overall.
Zero
KMT stands for?
Kinetic Molecular Theory
This element’s symbol is "Na".
Sodium
This scientist made a famous model with rings.
Niels Bohr
Atoms of the same element always have the same number of these.
Protons
These particles are inside every atom.
Subatomic particles
This process happens when a solid turns into a liquid.
Melting