What is matter?
Anything that has mass and takes up space (macro)
What is a substance?
A single kind of matter that always has a specific makeup (Macro)
what is a physical property?
A property that can be observed without changing the matter into another type of matter.
What is a chemical property?
charateristics that describe something's ability to become something else
Water and CO2 in leaves is converted to oxygen and sugar: What kind of property does this describe?
A chemical property because the water and CO2 are CHANGING into sugar and oxygen. They become something different from what they originally were.
How is a molecule different from a compound?
A molecule is may only be made of one element, whereas a compound will always have at least 2 elements.
Express this number in scientific notation: 10,000,000
10^7
What is a molecule?
2 or more atoms bonded together
What is a compound?
2 or more atoms of at least 2 different elements bonded together (Micro)
What are atoms made of?
subatomic particles
How do you measure volume?
By either: measuring the dimensions of an object and multiplying them OR submerging an object in a known amount of water and measuring the difference.
What are the two types of mixtures?
Homogenous and heterogeneous
Mass divided by volume = ????
Density
What is a heterogeneous mixture?
A mixture where you can see the different parts
What is a homogenous mixture?
A mixture where you cannot see the different parts
What is density?
How tightly packed a mass is
