Show:
Compounds & Elements
Mixtures
Chemical vs. Physical
Separation Techniques
Misc.
100
Simplest form of a substance.
What is an Element
100
Define Mixture
What is two or more substance that keep their properties and are not combine in a set ratio.
100
Combustion, electrolysis and oxidation are examples of this
What is chemical change?
100
Technique to separate two crystalline solids.
What is Solubility?
100
Matter in not created or destroyed.
What is law of conservation of mass?
200
Two or more elements combined chemically, that form a new substance with new properties
What is a Compound
200
A mixture where the different parts can be seen
What is heterogeneous mixture?
200
Change of state, shape or form are examples of this
What is a physical change?
200
Technique to separate a dissolved solid from a liquid.
What is evaporation?
200
A reaction that uses more energy than it releases.
What is endothermic reaction?
300
Base particle of an element.
What is an atom?
300
Two ways mixtures differ from compounds
What is not chemically combined, no new substances.
300
An change in thermal energy is an example of this.
What is a physical change?
300
A technique to separate same size objects.
What is density?
300
A reaction that has a larger energy arrow on the result side vs. the reactant side.
What is an exothermic reaction?
400
Shows the elements in the compound and the ratio of atoms.
What is the chemical formula?
400
Evenly mixed substance that can't be seen
What is homogeneous mixture?
400
Compounds undergo this type of change(s).
What is chemical and physical.
400
Technique to separate various sized objects?
What is sifting or screening?
400
This changes as a substance changes state.
What is thermal energy?
500
Force of attraction between two atoms
What is a chemical bond?
500
The mixture of nitrogen and oxygen in the air
What is a solution?
500
Every chemical or physical change requires a change in this
What is energy?
500
Separate a three part mixture of salt, iron fillings, and beads.
Use magnet first and then screen salt from beads.
500
The density of an item with the dimensions 2cm x3cm x4cm and a mass of 24g.
What is 1 g/cm3?