If you heat up a substance, such as a gas, its volume will increase, what will happen to the density?
The density of the substance would decrease.
State the Law of Conservation of Matter
Matter can neither be created nor destroyed, only transformed
List 3 Intensive Properties
Any 3 Intensive Properties will be accepted
Air
Mixture
Pure Substance
Describe the difference between a Physical and Chemical CHANGE
A physical change is a change in matter that does NOT alter the chemical composition of the substance, while a chemical change results in a NEW substance
Classify the following matter: Salt Water
Compound
Heterogeneous Mixture
Element
Homogeneous Mixture
Which of the following is NOT a physical property?
Luster
Reactivity
Melting Point
Freezing Point
Classify the following matter: Chocolate Chip Cookies
Heterogeneous Mixture
Homogeneous Mixture
Element
Compound
Concrete
Pure Substance
Mixture
What is the formula for calculating volume, given the density and mass?
v = m/d
If you cool down a substance, such as a gas, its volume will decrease, what will happen to the density?
The density of the substance will increase.
Oxygen
Pure Substance
Mixture
What is the formula for mass, given the density and the volume?
m = d x v
Describe how you would measure the volume of a regular object, for example, a box.
L x W x H
Which of the following is NOT a chemical change?
Boiling
Rusting
Baking
Combusting
If the matter can be physically separated it is classified as this
Mixture
Describe the difference between Intensive and Extensive Properties
Intensive properties depend on the type of matter in a sample, while Extensive properties depend on the amount of matter in the sample
Which of the following is NOT a chemical property?
Toxicity
Combustibility
Flammability
Conductivity
A substance has a mass of 25.0 g and a volume of 32.25 mL, what is the substance's density?
.775 g/mL
A substance has a density of 1.25 g/mL and a volume of 34 mL, what is its mass?
43 g
All phase changes, such as boiling, condensing, melting, freezing, evaporating etc. are classified as
Chemical Changes
Physical Changes
Describe the difference between a homogeneous mixture and a heterogenous mixture.
A homogeneous mixture is uniform throughout, while a heterogeneous mixture is different throughtout
Describe the difference between a Physical and Chemical PROPERTY
A physical property can be observed WITHOUT altering the substance, while a chemical property is observed during a chemical reaction
Mixtures involving a solute and solvent are special homogeneous mixtures called
Solutions
Describe the difference between an element and a compound.
An element is matter that can not be chemically separated any more, a compound is two or more elements bonded together
A substance has a volume of 224 mL and a mass of 10.15 g, what is the substance's density?
.045 g/mL
Mixture of metals are special homogeneous mixtures called
Alloys
Salt
Mixture
Pure Substance
Classify the following matter: Sugar
Compound
Heterogeneous Mixture
Eelement
Homogeneous Mixture
Classify the following matter: Brass
Homogeneous Mixture
Compound
Element
Heterogeneous Mixture
All of the following are signs that a chemical reactions took place, EXCEPT
Change in Odor
Change in State of Matter
Change in Color
Change in Temperature
Describe how you would measure the volume of an irregular object.
Describe the process of water displacement
What is the formula for calculating density?
d = m/v
Classify the following matter: Aluminum
Homogeneous Mixture
Element
Compound
Heterogeneous Mixture
Steel
Mixture
Pure Substance
What is the difference between a pure substance and a mixture?
A mixture can be separated by physical means while a pure substance cannot.
A substance has a density of 1.50 g/mL and a mass of 76 g, what is its volume?
51 mL
Classify the following matter: Air
Heterogeneous Mixture
Element
Compound
Homogeneous Mixture
Describe density.
Density is described as the amount of matter (mass) in a certain volume
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