Properties of Matter
Anything that has a mass and takes up space is called __________.
Matter
What is matter made up of?
particles, atoms, molecules
Cutting a piece of paper is an example of a _________ change.
physical
When two or more substances are mixed and a new substance is formed from them, it is called a ___________ change.
chemical
_____________ is the scientific study of what matter is made of and how it changes.
chemistry
People can use ___________ to describe and identify matter.
Properties
Why can't we see molecules or particles?
Particles/molecules are too small to be seen
During a physical change, the total _________ of the matter is conserved.
mass
When a chemical changes happens, the total matter, or or mass, _______________.
stays the same/ is conserved
atoms/molecules
The ability of a substance to dissolve
Solubility
Give an example of a particle too small to be seen.
air molecules/particles
What are the three states of matter?
solid, liquid, and gas
What is an example of a chemical change?
glow stick, burning wood or a candle, firework, rusting, cooking, baking, rotting
When matter is made up of a single type of atom, what is it called?
an element
Name three properties of matter.
color, hardness, reflectivity, buoyancy, electrical conductivity, thermal/heat conductivity, magnetism, and solubility
Blowing up a balloon or bag of air is a type of _________ to show or explain that particles exist.
model
Define what a physical change of matter means.
a change in volume, density, or state of matter that does not create a new substance
How do you know there has been a chemical change?
formation of gas (bubbles), change in color, change in temperature, change in odor/smell, light, new substance appears (precipitate)
All of the atoms of an element have the same number of ___________.
protons
List two measurements that can describe matter.
mass, volume, density
What is an example of evidence that particles and molecules exist that are too small to be seen
evaporating water, water condensing on the outside of a glass or mirror, blowing up a balloon, wind, dissolving substances
How could you prove that the total mass of substances does not change in a physical change?
weigh the matter before and after the change
What kind of evidence of a chemical change would you expect to find when you burn a match?
change in temperature, emission of light, change in color of the match stick
What are molecules made of?
molecules are made up of atoms