Matter
anything that has mass and occupies space
Matter
particles are held close together by strong attractive forces
solid
37 C is --------K
310 K
Changing ice to water is?
melting
When the element is abbreviated it is called ...
What is the symbol
Have fixed or definite composition
Pure substance
has a definite volume, but not a definite shape
liquid
mowing the lawn is an example of
kinetic energy
Changing liquid to gas is?
evaporation
The number at the top of each element on the periodic table is called...
What is the atomic number
•two or more different substances that are physically mixed but not chemically combined.
Mixtures
particles that are far apart, move at high speeds, and have little attraction to each other
Gas
gasoline in the gas tank
potential
Changing from solid to gas is?
sublimation
The atomic number is also the same number of _____ in the element
What is protons
Brass is a -------- mixture
homogeneous
A silver knife can tarnish
chemical change
How many calories are in 150 J? (1 cal=4.184 J)
36 cal
Changing gas to solid is?
deposition
The large number on the bottom of the element card is called...
What is atomic mass
Air is a ------- mixture
homogeneous
burning a candle is a ------- change
chemical
How many kcal are in 1 gram carbs, fat, and protein?
4,9,4
Changing gas to liquid is?
condensation
Atomic number is -------- than mass number
smaller