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Solid, Liquid or Gas
Physical vs. Chemical Changes
Separating Materials
Chemical Reactions
Definitions
100
This state of matter has a definite (fixed) shape and volume.
What is a solid
100
Ripping paper
What is a physical change?
100
The best way to separate a mixture of sand and iron filings would be to use:
What is a magnet
100
A change in a substance that does not change its identity.
What is a physical change.
100
Mixtures that is unevenly mixed with one another.
What is heterogeneous
200
This state of matter has a definite volume but takes the shape of its container.
What is a liquid
200
Baking Bread
What is a chemical change?
200
What would be the best method to separate salt that has been dissolved in water?
What is evaporation
200
A change in which one of more substances break apart to form a new substance.
What is a chemical change.
200
when a substance is evenly dispersed in another mixture
What is homogeneous mixture.
300
This state of matter expands to fill the room and is of low density.
What is a gas?
300
The scientific name for mixing iron with water and oxygen.
What is iron oxide?
300
What would be the best method for separating popcorn kernels from sand?
What is a sieve
300
The substances that undergo change in a chemical reaction.
What is a reactant.
300
When we did our salt and water experiment, which substance was the solute and which was the solvent?
salt --- solute water --- solvent
400
Example: State of matter- SNOW
What is a solid?
400
Matter can not be created nor destroyed.
What is the Law of Conservation of Matter?
400
The best way to separate CO2 from a can of soda.
What is pop the top (open it).
400
The total energy in making and breaking of bonds in a chemical reaction results in a net absorption of energy (it's cold).
What is endothermic
400
A substance that contains only one type of atom
What is an element.
500
State of Matter- CLOUDS
What is gas?
500
Solid turns directly into a gas.
What is sublimation?
500
The process of pouring off the top layer without disturbing the layers or sediment below.
What is decanting
500
The law that states that during a chemical reaction, matter is neither created nor destroyed.
What is conservation of matter
500
what is a substance that cannot be separated by physical means
What is a pure substance.