"In Summmerrr"
Liquid to Solid
What is freezing?
Anything in the Universe that has mass and volume.
What is matter?
Only the electrons in the outmost shell.
What are valence electrons?
Solid to liquid
What is melting?
The central core of the atom holding protons and neutrons.
What is the nucleus?
The number of valence electrons.
What determines how reactive an element is?
Gas to Liquid
What is condensation?
Positively charged, found in nucleus.
What is a proton?
Liquid to Gas
What is evaporation?
Neutral or no charge, found in the nucleus.
What is a neutron?
Molecules don't change. What goes in is the same as what comes out.
What happens in a physical change?
Negatively-charged, orbits nucleus.
What is an electron?