properties of how chemical changes happen or whether they happen, like that wood can burn
100
what is a substance?
a single type of matter that is pure
100
What are the 3 main states of matter?
solid, liquid,gas
100
What is one interesting property of pure hydrogen?
It can explode.
100
what is another term for "solution?"
homogeneous mixture
200
Is melting point a physical or chemical property, and is it intrinsic or extrinsic?
Physical and intrinsic
200
what is the difference between a substance and a molecule?
not much. a molecule is macroscopic and a substance is macroscopic
200
Which state of matter has a fixed volume but can change shape?
Liquid
200
What is one interesting property of helium?
It does not form chemical bonds, so it doesn't make molecules.
200
Is water is a very common liquid solvent or solute?
solvent
300
What is a property?
A fact about something we can observe or measure
300
is an element a substance?
yes
300
What is the least ordered type of solid?
amorphous solid
300
This is an interesting property of carbon.
It can make graphite, diamonds, and is important in biology.
300
what is the difference between solvent and a solute?
the solvent has the greater amount in the solution
400
A sample of 50g of pure water and another sample of 500g of pure water both have the same ___________ properties but they have different _______________ properties.
same intrinsic properties but different extrinsic properties
400
what types of properties cannot be used to identify substances, and give two examples.
extrinsic properties, like mass, volume, and shape
400
How can you change the state of matter?
change temperature and/or pressure
400
This is an interesting fact about nitrogen.
It makes up 80% of air, and is important in biology, but less so than carbon.
400
what two factors can change the solubility of a solute in a solvent?
temperature and pressure
500
why do diamond and graphite, both pure carbon, have different properties?
the atoms are arranged and bonded to each other differently in each
500
what type of change makes new substances?
chemical change
500
what is a crystal?
a type of solid in which the atoms are highly ordered
500
This is an interesting fact about oxygen.
It makes up about 20% of air, we need to breathe it, and it makes things burn and explode.