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Classifying Matter
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All phase changes, such as boiling, condensing, melting, freezing, evaporating etc. are classified as
 
Physical Changes
 
Chemical Changes
If the matter can be physically separated it is classified as this
Mixture
Water
 
Pure Substance
 
Mixture
Steel
 
Mixture
 
Pure Substance
Describe how you would measure the volume of a regular object, for example, a box.
L x W x H
Describe how you would measure the volume of an irregular object.
Describe the process of water displacement
A substance has a density of 1.50 g/mL and a mass of 76 g, what is its volume?
51 mL
A substance has a density of 1.25 g/mL and a volume of 34 mL, what is its mass?
43 g
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
Describe the difference between a homogeneous mixture and a heterogenous mixture.
A homogeneous mixture is uniform throughout, while a heterogeneous mixture is different throughtout
All of the following are signs that a chemical reactions took place, EXCEPT
 
Change in State of Matter
 
Change in Color
 
Change in Temperature
 
Change in Odor
State the Law of Conservation of Matter
Matter can neither be created nor destroyed, only transformed
Mixtures involving a solute and solvent are special homogeneous mixtures called
Solutions
Mixture of metals are special homogeneous mixtures called
Alloys
Soil
 
Mixture
 
Pure Substance
Oxygen
 
Pure Substance
 
Mixture
Salt
 
Pure Substance
 
Mixture
Baking Soda
 
Pure Substance
 
Mixture
Air
 
Mixture
 
Pure Substance
Concrete
 
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 volume of 224 mL and a mass of 10.15 g, what is the substance's density?
.045 g/mL
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
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.
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.
What is the formula for mass, given the density and the volume?
m = d x v
What is the formula for calculating volume, given the density and mass?
v = m/d
What is the formula for calculating density?
d = m/v
Describe density.
Density is described as the amount of matter (mass) in a certain volume
Which of the following is NOT a physical property?
 
Reactivity
 
Melting Point
 
Freezing Point
 
Luster
Which of the following is NOT a chemical property?
 
Conductivity
 
Flammability
 
Combustibility
 
Toxicity
Which of the following is NOT a chemical change?
 
Boiling
 
Combusting
 
Rusting
 
Baking
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
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
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
List 3 Intensive Properties
Any 3 Intensive Properties will be accepted
List 3 Extensive Properties
Mass, Volume, Energy
Classify the following matter: Brass
 
Homogeneous Mixture
 
Heterogeneous Mixture
 
Element
 
Compound
Classify the following matter: Coffee
 
Homogeneous Mixtures
 
Heterogeneous Mixtures
 
Element
 
Compound
Classify the following matter: Salad Dressing
 
Heterogeneous Mixture
 
Homogeneous Mixture
 
Element
 
Compound
Classify the following matter: Sugar
 
Compound
 
Eelement
 
Heterogeneous Mixture
 
Homogeneous Mixture
Classify the following matter: Air
 
Homogeneous Mixture
 
Heterogeneous Mixture
 
Element
 
Compound
Classify the following matter: Salt Water
 
Homogeneous Mixture
 
Heterogeneous Mixture
 
Element
 
Compound
Classify the following matter: Aluminum
 
Element
 
Compound
 
Heterogeneous Mixture
 
Homogeneous Mixture
Classify the following matter: Chocolate Chip Cookies
 
Heterogeneous Mixture
 
Homogeneous Mixture
 
Element
 
Compound
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