Matter
Everything
Matter
changes to appearance but not the matter itself
Physical change
Liquid to solid
Freezing point
A combination of two or more substances that keep their identities
Mixture
A less-dense substance will do what?
A more-dense substance will do what?
Less dense: Float
More dense: Sink
Three states of matter.
Solids, liquids, gases
Example of physical change
ice cube melting, cutting a cake, boiling water
Solid to liquid
Melting
Mixture with same composition throughout
Solution
How does slicing an apple into 8 slices affect its mass?
It does not change its mass.
Physical properties of matter
size, color, shape, texture, odor, temperature
What happens when matter changes states?
a physical change
Liquid to Gas
Evaporation
What can you use when you separate mixtures simply?
Physical properties such as color, size, melting point, boiling point, density
How does water change as it evaporates?
Its mass remains unchanged and its volume increases
Amount of space something takes up
Volume
This change makes new substances.
Chemical changes
Gas to Liquid
Condensation
Example of mixture.
Example of solution.
Mixture: fruit salad
Solution: lemonade
Matter may be a solid, liquid, or gas and can change from one state to another state. What explains why matter changes its state?
Change in temperature
Amount of matter in something
Mass
Matter cannot be created nor destroyed
Conservation of Mass
Example of freezing point
Water to Ice
What do you use to separate mixtures when they are complex?
Sieve/mesh screen, magnetic force, filtration, evaporation/boiling
When adding food coloring to water, it will create a solution. Why?
The parts are evenly mixed.