Particles
Everything on Earth is made up of these.
Elements
Two hydrogen and one oxygen particle combine to make what substance?
Water
Air is matter because it has mass and __________ ______________.
Occupies space
All moving objects have _______ _________.
Kinetic energy
What phase has a definite size (volume) and shape?
Solid
Elements are the building blocks of ______.
Matter
What is the chemical formula for water?
H2O
Air is a mixture of many _______.
Gases
Air particles transfer energy when they do this to things.
Crash into them
What phase has a definite volume but changes shape?
Liquid
Even though particles can be different shapes and sizes, we can model them all using what shape?
Connecting circles
H2O is made of two hydrogen particles and how many oxygen particles?
One
Approximately four-fifths of the air is what kind of gas?
Nitrogen
Air particles can crash into each other, you and _____ ___ __________.
Walls of containers
What phase does NOT have a definite volume or shape?
Gas
Substances
What is the chemical formula for sodium bicarbonate?
NaHCO3
Approximately one fifth of the air is what kind of gas?
Oxygen
The amount of kinetic energy an object has depends on what two things?
Mass and speed
In what phase do particles stick together and cannot move around each other?
Solid
Particles of substances can have many different forms. What two characteristics can be different?
Their shapes and sizes
MgSO4 is made of one magnesium, one sulfur, and how many oxygen particles?
Four
At room temperature, air particles move at about this speed.
300 meters per second
Heating particles increases their kinetic energy by increasing ____ ______.
Their speed
In what phase do particles fly around as individuals because they are not bonded?
Gas