Key Terms
Everything that has weight and takes up space is...
matter
Chemical or physical change?
glass breaking
physical change
Describe strength
The strength of a substance is its ability to withstand great force or pressure without breaking.
What is it called when a solid turns into a liquid?
melting
burnt wood
solid
A solution where the mixture looks the same throughout
Homogeneous Solution
Chemical or physical change?
mixing vinegar and baking soda
chemical change
Describe texture
The texture of a substance is the feel and consistency of a substance. Some substances are thick and chunky, while others are smooth.
A liquid turning into a solid
freezing
orange juice with pulp
liquid
What is a Hazard Label?
Put on chemicals to give instructions on how to handle the chemicals safely
Chopping vegetables
Physical change
Describe Buoyancy
The buoyancy of a substance is its ability to float in water or air or other fluid.
When vapor/gas turns into a liquid
condensation
Breath in the winter
gas
What is Raw Material?
Unprocessed materials found in our environment – ex. Fish, wood, rock
baking a cake
chemical change
Describe flexibility
The flexibility of a substance refers to its ability to bend. Rubber is a substance that is very flexible.
What is it called when a liquid turns to a gas?
evaporartion
steam
gas
A mixture where we can see the two substances after they have been mixed. The solute does not dissolve into the solvent.
heteregeneous mixture
Digestion
chemical change
Describe solubility
The solubility of a substance is the ability for the substance to dissolve into a liquid.
Salt is a substance that dissolves easily into water.
DOUBLE JEOPARDY
Give an example of condensation, freezing, melting and evaporation
answers vary
melted cheese
(think nachos)
liquid