Classifying Matter
Matter that always has the same composition
Pure Substance
Give an example of a substance that has high viscosity.
honey, syrup, lava, etc.
Chemical changes result in one or more _____ substances being formed
new
States of matter are defined by their ______ and _____
shape and volume
A phase change is a reversible ________ change.
physical
Contains two or more substances that are not chemically combined and does not have a fixed composition
mixture
The ability to cut/scratch through other substances
hardness
Flammability is the ability to burn in the presence of _____
oxygen
Which state of matter consist of particles that are orderly in arrangement and tightly packed together?
solids
condensation
What is the simplest form of matter, made up of only only 1 type of atom
elements
the ability to strike a substance without it shattering
What is malleability?
Explain how the statue of liberty is an example of a chemical change
the statue is made of copper, originally was brown. Overtime, copper oxidized (reacted with moisture in the air) and turned green
Which state of matter is being describes?
PARTICLES OF MATTER ARE ABLE TO FLOW FREELY AROUND OTHER PARTICLES.
Liquid
What 2 processes are part of vaporization?
evaporation and boiling
type of mixture where the parts of the mixture are noticeably different from one another.
heterogeneous mixtures
Physical properties can be used to separate mixtures. _______ is the process of separating mixtures based on differences in boiling point.
Distillation
Tendency of a substance to combine chemically with other substances
reactivity
Place the three states of matter in order from greatest to least kinetic energy
gas - liquid - solid
What happens to temperature of a substance during a phase change.
Give an example of a heterogeneous mixture AND homogeneous mixture.
Label which is which
answers will vary
If the object's density is greater than the density of the liquid, it will sink.
If the object's density is lower than the density of the liquid, it will float.
Name 3 clues that a chemical change may have occurred
- change in color
- production of gas
- formation of a precipitate
- change in odor
-production of heat/light
What theory says "All particles of matter are in constant motion"
kinetic theory of matter
What is the difference between endothermic and exothermic phase changes.
endothermic absorbs energy
exothermic releases energy