Properties of Matter
What is the amount of matter in an object called?
mass
What state of matter has a definite shape and definite volume?
solid
What is the smallest unit of matter?
Cutting paper is what type of change?
Physical change
What model explains that all matter is made of moving particles?
Particle (kinetic) theory of matter.
What property describes how much space an object takes up?
Volume
What state of matter has no definite shape but has definite volume?
Liquid
What is a substance made of only one type of atom?
Element
Burning wood is what type of change?
Chemical Change
What do we call a combination of two or more substances not chemically bonded?
Mixture
What is the formula for density?
Density = Mass รท Volume.
What state of matter has no definite shape or volume?
Gas
Where are protons found in an atom?
In the nucleus.
What evidence shows a chemical change occurred?
Gas formation, temperature change, color change, or new substance formed.
What is the term for the temperature at which a liquid turns to a gas?
Boiling point.
What property can be observed without changing the substance?
Physical property.
What do we call the change from solid to liquid?
Melting
What determines the identity of an element?
The number of protons (atomic number).
What kind of change is melting ice?
Physical change (change of state).
What happens to total mass in a chemical reaction?
It stays the same (Law of Conservation of Mass).
List one example of an intensive physical property.
Density, color, boiling point, melting point.
What happens to particle motion when temperature increases?
Particles move faster.
What is a molecule?
Two or more atoms chemically bonded.
When a chemical change happens, what is formed?
A new substance.
What type of diagram shows how particles are arranged in solids, liquids, and gases?
Particle Model diagram