The Atomic Nature Of Matter Flashcards
What is matter
Anything that takes up space
Molecule
A group of atoms joined together
Particle
Things that make up matter
A physical change
When atoms form in a new way to give us a mixture but do not create a new substance
(Eg. Ice melting)
Mixture
Two or more different substances are physically combined, the physical change is easily reversible
(Eg. a mixture of sand and stone)
Name the three states of matter
Gas
Solid
Liquid
What is evaporation?
Evaporation is the change of state from liquid to a gas
Name the characteristics of solids
Have a definite shape
Have a definite volume
Cannot be easily compressed
Cannot flow
Name the characteristics of liquid
Have no definite shape
Have a definite volume
Are not easily compressed
Are able to flow
Name the characteristics of gas
Have no definite shape
Have no definite volume
Can be easily impressed
Can flow
What is the chemical change?
When atoms arrange in a different way to give us a new substance called a compound
What are signs of a chemical change in a reaction
A change in colour
A change in temperature
What is melting?
Melting is the change of state from a solid to liquid by adding heat
What is an atom?
The smallest particle of matter
What are elements?
A substance made up of only one type of atom
