Phase changes
What is the phase change when a liquid turns into a gas?
evaporation
malleability is...
the ability to be shaped and not break
what is a sign that chemical changes has occured
color
odor
heat
gas
True or False: Mixtures are chemically combined
False
Are solutions homogenous or heterogeneous?
Homogenous
This is the type of phase change that occurs when a gas turns into a solid.
Deposition
Density is...
Mass/Volume
can physical changes be reversed
yes
What are the two types/classifications of mixtures based on how well they combine?
Homogenous and Heterogeneous
True or False: A gas absorbs energy as it changes into a liquid
False
Flammability is considered as what property?
Chemical property
what type of mixture is sea water
homogeneous mixture
Alcohol, water, and table salt are examples of what?
Compounds
What is the difference between elements and compounds?
Elements are only made of one type of atom, compounds are always two or more.
As water freezes, it releases heat to its surroundings. Feezing is an example of a(n) ________ change.
exothermic
When substances change to one or more NFW substances
Chemical property
this law states that mass is conserved in chemimal reactions
what is the law of conservation of mass
If something has no mass and does not take up space, what is it classified as?
Energy
A substance with greater molecular attraction will _______ into a solid at a higher temperature than a substance with lower molecular attraction.
freeze
Does a chemical property determine if heat can flow through it?
no, that is physical
What are some examples of things that would be hard to classify just by looking at it?
Any clear liquid