States of Matter
The state of matter without a definite shape nor definite volume.
Gas
Finish the sentence:
All pure substances...
have a fixed composition.
mixture
A property metals have in common is that they...
conduct electricity.
Which of the following is NOT a clue that a chemical change has occurred?
a. change in color, b. production of a gas, c. change in size, d. formation of a precipitate
c. change in size is a physical change not a chemical change.
The state of matter with a definite shape and definite volume.
Solid
Which of these substances is not an element?
a. Water b. Hydrogen c. Aluminum d. Iron
A. Water
Salty water is best classified as a...
mixture
Which of the following is not an example of a physical property?
Reactivity
What type of change occurs when water changes from a solid to a liquid?
a. an irreversible change, b. a phase change
c. a physical change, d. both b & c
d. water changing from a solid to a liquid is a phase change which is also a physical change.
All matter takes up space and
has mass.
The ratio of a substance’s mass to its volume is called what?
density
A homogeneous mixture made by dissolving one substance in another.
solution
Movement in gases and liquids that spreads out particles.
diffusion.
Evaporation and condensation involve a...
change of phase.
The three common phases of matter used to group substances are...
Solids, liquids and gasses
If an unknown substance cannot be broken down into simpler substances, it is...
a. made up of only one kind of atom.
b.an element
c. a compound
d. both a & b
d. It is an element that is made up of only one kind of atom.
The substance in a solution that does the dissolving
Solvent
Which of the following has the highest viscosity?
a. corn syrup, b. water, c. vegetable oil, d. alcohol
a. corn syrup has the highest viscosity (is the thickest) it also has the highest density.
remember- experiment 2.2
Which action involves a chemical change?
a. making sweet tea b. freezing water into ice cubes
c. shredding paper d. baking a cake
Baking a cake
Forces of attraction limit the motion of particles most in...
solids
What is the difference between an element and a compound?
Compounds can be broken down into simpler substances, elements cannot.
The substance in a solution that gets dissolved
Solute
What type of property is viscosity?
Physical
When a physical change in a sample occurs, which of the following does not change?
a. size, b. shape, c. volume, d. composition
d. composition