IA 2 Review

Compounds

100

A_______________ can be made up of two or more atoms of the same element, chemically bonded.

Molecules

200

The structural model of O=C=O. The lines indicate chemical bonds. The chemical formula for carbon dioxide is _________.

CO₂

300

The ___________ of a molecule or compound can be very different from the elements that form the molecule or compound.

Properties.

400

Calculate the number of atoms in each of the chemical formulas below: Magnesium Chloride - MgCl₂ 

Vinegar - C₂H₄O₂

Sugar - C₆H₁₂O₆

Magnesium Chloride - 3

Vinegar- 8

Sugar- 24

500

In which molecule are all the atoms the same?

CO₂ 

Cl₂ 

CO

Cl₂

Chemical Changes

100

The ability to _________ is a chemical property.

A- conduct electricity

B- dissolve in water

C- react with oxygen

D- conduct heat

C- react with oxygen

200

___________ is a chemical change.

A- dissolving 

B- bending

C- boiling

D- burning

D- Burning

300

List two indicators of a chemical change when frying eggs.

Change in color

Burning

400

A rotting banana is an example of a chemical change. True or False?

True

500

When you drink milk and discover that it is sour. Is this a chemical change?

Yes

Mixtures

100

All of the following statements about mixtures are true except _____. 

A - A mixture is made up of 2 or more pure substances. 

B - A mixture can be separated physically. 

C - One of the substances in a mixture must be a liquid. 

D - A mixture does not have a definite makeup.

A- A mixture is made up of 2 or more pure substances.

200

A beaker contains sand and water. What is the best way to separate this mixture?

Filtration.

300

Name the two parts of a solution.

Solute and solvent

400

All of the following statements are false except _____. 

A - The particles in a mixture are from the same element. 

B - The particles in a solution can be seen in bright light. 

C - The particles in a mixture can be separated only by chemical means. 

D - The particles in some mixtures can be separated by filtration.

D- The particles in some mixtures can be separated by filtration.

500

A snow globe, orange juice with pulp and bubble tea are all examples of what type of mixture?

Heterogeneous mixture

Physical Changes

100

Select the change of state that causes the particles to move farther apart. 

A - gas to solid 

B - gas to liquid 

C - liquid to solid 

D - solid to liquid

D- solid to liquid

200

Select the change of state that causes the particles to move closer together. 

A - freezing & vaporization 

B - vaporization & evaporation 

C - melting and freezing 

D - condensation and freezing

D- condensation and freezing

300

Choose which one is a physical change. 

A - rusting 

B - burning 

C - dissolving 

D - tarnishing

C- dissolving

400

__________ happens during a physical change. 

A - New substances are formed. 

B - The identity of the substance is changed. 

C - A chemical reaction occurs.

 D - A substance changes form but does not lose its identity.

D- A substance changes form but does not lose its identity.

500

Joe and Sam are watching a movie on Saturday night. Joe makes the popcorn and Sam makes the Koolaid. Name the physical change Joe must use to get the butter on the popcorn and the physical change Sam must use to make the Koolaid.

Melting and dissolving

Miscellaneous

100

During evaporation, particles start to __________ and _____________.

speed up, move further apart.

200

Distillation involves which two phase changes?

evaporation and condensation.

300

Why can water not be found on the periodic table?

It is not an element. It is a compound

400

Frost on swing sets and car windshields is an example of what phase change?

Deposition.

500

What do melting, evaporation and sublimation all have in common?

They absorb thermal energy.