Properties of Matter
Iron reacts with oxygen in the air to form iron oxide.
Chemical property/Physical Property - intensive/Physical property - extensive
Chemical Property
Fluoride
element/compound/homogeneous mixture/heterogeneous mixture
Element
An ice cube melts forming water.
Physical change/chemical change
Physical change
What is wrong with the following hypothesis? Gene thinks that GE light bulbs last longer than other brands.
If/then statement
Color
Chemical property/Physical Property - intensive/Physical property - extensive
Physical Property - intensive
Medium coffee with cream and sugar.
element/compound/homogeneous mixture/heterogeneous mixture
homogeneous mixture
Zn + HCl --> ZnCl2 + H2
Physical change/chemical change
Chemical change
This describes a natural phenomenon.
Law
Helium is non-reactive.
Chemical property/Physical Property - intensive/Physical property - extensive
Chemical Property
Give an example of a compound.
Answers will vary.
What is one way you can recognize a chemical change is taking place?
Color change, gas is produced, precipitate is produced, change of energy
Define matter.
Something that takes up space and has mass.
Water boils at 100 degrees C.
Chemical property/Physical Property - intensive/Physical property - extensive
Physical property intensive
Powdered sugar
element/compound/homogeneous mixture/heterogeneous mixture
compound
What method would you use to separate water from ink?
Distillation
The higher the temperature of the air in the oven, the faster a cake will bake.
Identify the dependent variable.
Time it takes the cake to bake.
A given sample of lead weighs 74 g.
Chemical property/Physical Property - intensive/Physical property - extensive
Physical property intensive
Mixtures can be separated by...
chemical means
physical means
both
Physical means only
Explosion of color from a fire work
Physical change/chemical change
Chemical Change
Some of the earliest examples of chemistry included the dyes and perfumes made by these people.
Egyptians