Classification of Matter

Which is NOT a chemical change?

• Leaves changing colors in the fall
• Iron rusting
• Digesting Lunch
• Ice Melting

Between which points is the temperature of the substance remaining constant?

• A-B only

• A-B, C-D, and E-F

• B-C only

• B-C and D-E

If the temperature of the substance is held constant at -15 ºC, the phase change that would occur with a pressure increase from 1 atmosphere to 30 atmospheres is:

• MELTING

• SUBLIMATION

• DEPOSITION

• CONDENSATION

What is a homogeneous mixture?

• a mixture that is the same throughout.
• a mixture that is made up of one type of atom.
• a mixture that is made up of one type of compound
• a mixture that cannot be separated through physical changes

Lucky Charms

• Heterogeneous

• Homogeneous

• Element

• Compound

At 30 atmospheres pressure, the boiling point of this substance is:

• -105

• 0

• 50

• 200

Anything that has mass & takes up space

• gravity
• force
• matter
• volume

M&Ms

• Heterogeneous

• Homogeneous

• Element

• Compound

In which region(s) does temperature increase?

• Region C only

• Regions B and D

• Regions A, C, and E

• Regions A and B

What will weigh more when a chemical change is complete?  The reactants before the chemical reaction, or the product after the reaction is complete?

• They both will weigh the same
• The product always weighs more than the reactant
• The reactant will weigh more than the product
• They both will loose mass after the reaction