Matter
This is anything that has mass and takes up space.
What is matter?
This is the amount of matter in an object.
What is MASS?
When a solid turns into a liquid, this is happening.
What is MELTING?
When you add heat to ice, it undergoes this change.
What is MELTING?
The center of the atom is called this.
Nucleus
The smallest unit of matter is called this.
What is an atom?
The particle found in the nucleus with a positive charge.
What is a PROTON
When a liquid turns into a gas due to heat being added.
What is EVAPORATION?
When you remove heat from water vapor, this happens.
What is CONDENSATION
Is NaCl (Salt) what type of pure substance is this
COMPOUND
Matter can exist in these three main states.
Solid, Liquid, and Gas
The particle with no charge found in the nucleus.
What is a NUETRON
When gas turns into a liquid because heat is removed.
What is condensation?
When heat is added to a liquid, particles spread apart and become this state.
What is a GAS?
The total number of protons in an atom determines this.
Atomic Number
This state of matter has particles that move the fastest.
What is a Gas
The particle with a negative charge that orbits the nucleus.
What is an ELECTRON
When a liquid becomes a solid because heat is removed.
What is FREEZING
Phase changes that occur when heat is removed from a substance. (TWO ANSWERS)
What are freezing and condensation?
How do atoms bond to one another
Electrons
This describes how tightly packed particles are in a substance.
What is DENSITY
Protons + neutrons = this value of an atom.
What is the atomic mass (mass number)?
This phase change happens when a solid becomes a gas without turning into a liquid first.
What is sublimation?
Phase changes that require heat to be added to a substance. (TWO ANSWERS)
What are melting and evaporation?
is H20 a molecule or atom?
Molecule