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Key Terms
Classification
Density
Physical & Chemical
Misc
100

Two or more substances that are physically blended together (no chemical bonding)

Mixture

100

What are the two types of mixtures?

Homogeneous

Heterogeneous

100

What is the formula for density?

Density = mass/volume

D=m/v

100

Which type of change can be easily undone?

Physical changes

100

Is hardness an intrinsic or extrinsic property?

Intrinsic (does not change with size)

200

How much matter is within an object is its __________.

Density

200

What are the two types of pure substances?

Elements

Compounds

200

An object with a density lower than water (1g/mL) will ___________.

Float

200

Burning a piece of wood, is an example of this type of change.

Chemical

200

Which type of substance is made up of only one type of atom?

Elements

300

This word means that the property does NOT change as the size of the sample changes.

Intrinsic

300

Give an example of a compound

Carbon dioxide CO2

Water H2O

Salt NaCl

300

Solve for density: an object has a mass of 150g and a volume of 10mL. 

D= 150g/10mL 

D= 15g/mL

300

Chemical changes change the ________________ of the substance.

Properties

300

Granite rocks with distinct layers are _____________

Heterogeneous Mixtures

400

What is the smallest building block of all matter?

An atom

400

Trail mix would be an example of what classification of matter?

A heterogeneous mixture

400

What are the two ways volume can be measured?

Water displacement 

LxWxH

400

Give an example of a physical change you could do to a glass of water.

Freeze it, boil it, spill it out, add more water to it, etc. 

400

Calculate the volume of a textbook that measures 12cm tall, 9 cm wide, and 4cm thick. 

V = LxWxH 

V = 12x9x4

V = 432cm3

500

Define matter

Anything that takes up space and has mass.

500

Classify Nitrogen gas (N2) as either a pure substance or mixture. Then specify further as heterogeneous, homogeneous, element, or compound.

Pure substance

Element

500

An object with a mass of 33g is dropped into a graduated cylinder and the water rises from 10mL to 43mL. What is the density of the object?

V = 43mL -10mL = 33mL

D= 33g/33mL

D= 1g/mL

500

Name one of the five key signs that a chemical change has occured?

New smell/odor

Fizzes/Bubbles

Precipitate forms in liquids

Unexpected color change

Temperature change

500

What holds compounds together?

Chemical bonds