how many sig figs are in 4,500?

True or False: Saying something is clear is a qualitative observation

potential energy is changing
what is happening during a phase change?

A change in mass or volume is a ….change

What kind of mixture did we separate?

Megan ran in a cross country meet last weekend. It was a 5k race. Megan wants to know how many feet she ran. Use dimensional analysis.

A change in date would be an example of a ….. observation.

what are the 3 states of matter ?

if something changes but doesn't end up as a new substance, then it is a... change

how did we separate the salt from the salt water?

the mass of a hamster is 17g. It has a volume of 2 L. What is the density of the hamster?

saying something smells like vinegar is a …. observation

what does the term "precipitate" mean?

a solid to a liquid to a gas is a ….property

what were you supposed to do with your magnet before using it to collect iron fillings?

True or False: a cooling curve, curves up

saying the mass of an object is 2.39 g is a ...observation

are molecules close together or far apart in a gas ?

if a material breaks and shatters, it is a ...change

what 3 things were in our mixture ?

When reading a scale, which is better to use for a more specific number? A flask that goes up by 10s, or a graduated cylinder that goes up by 5s?

what is a qualitative observation we made from the unknown substance lab?

which is NOT an example of matter?
air, water, smoke, water vapor, heat

when a substance turns into a new substance it is called a ...change

what is the equation for percent error?