paper being crumpled is an example of this change.
What is physical change.
100
This describes the amount of space something takes up.
What is volume
100
This word describes a non-uniform mixture, such as soil.
What is heterogeneous?
100
This is the type of energy that allows molecules to move.
What is kinetic energy.
200
The ability of a substance to dissolve in water is known as this.
What is solubility?
200
Two liquids are mixed together and a solid chunk, called a PRECIPITATE, forms at the bottom of the test tube. What kind of change has occured?
A chemical change.
200
Object A is 20g and 100mL; Object B is 20g and 10 mL; Object C is 20g and 2 mL.
Which object is most dense?
What is C.
200
Water is an example of this.
What is a compound (also will accept pure substance).
200
In this phase of matter, particles slide past each other and are randomly organized.
What is liquid.
300
A substance that is described as reactive will ____________ combine easily with other substances to form new substances.
What is "chemically."
300
Ice melting is an example of this change.
What is a physical change
300
The equation for Density
What is Density = mass / volume.
300
A substance that can only be separated by chemical means.
a) a gas
b) an element
c) a solution
d) a pure substance
What is a pure substance
300
This state of matter has a fixed volume but takes the shape of its container.
What is liquid.
400
This type of property can be observed by one of the five senses.
What is a physical property.
400
Which of the following is a physical change?
a) a banana ripening
b) a copper roof changing color from red to green
c) burning a piece of wood
d) sugar dissolving into water
What is d) sugar dissolving into water
400
Two substances are observed in a liquid solution X. Object A floats, and object B sinks.
Arrange the liquid, object A, and object B in order of INCREASING density.
object A< Liquid X < Object B
400
Air is an example of this.
What is a homogenous mixture/solution
400
A substace that takes the volume of its container.
a) gas
b) solid
c) liquid
d) solution
What is a) gas
500
Viscosity is a property of liquid substance's ability to flow; the more viscous the substance, the "thicker" the fluid is. Which of the following has teh thighest viscosity?
a)water
b)corn syrup
c) milk
d) orange juice
What is b) corn syrup
500
Which of the following is a clue of a chemical change?
a) wax changes from liquid to solid when poured into ice water
b) bubbles form when vinegar and baking soda are mixed
c) iron changes color when heated
d) bubbles form in boiling water
What is b) bubbles form when vinegar and baking soda are mixed
500
Use the equation for density to solve for the mass of a substance that has a density of 2 g/mL and a volume of 5 mL. (Must include units to be considered correct)
What is 10 g.
500
Which of the following is NOT a pure substance?
a) milk
b) water
c) carbon dioxide
d) oxygen
What is milk.
500
99% of all matter in the observalbe universe exists in this state.