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Energy
Properties of matter
states of matter
Chemical reactions
Specific heat capacity
100

Which of the following are examples of pure substances?  (choose more than one)

a. silver
b. water
c. air
d. carbon dioxide
e. saltwater

a. silver  (Ag)
b. water  (H2O)

d. carbon dioxide (CO2)

***A pure substance is any element or compound, and a specific chemical formula can be written for it.***

100

What is the equation for determining density of an object?

density = mass / volume

100
state of matter with definite shape and volume
solid
100

What is the law of conservation of mass?

Energy cannot be created nor destroyed, it can only be changed.

100

What SI units are used to express specific heat capacity?

J / g * C

Joules / grams * degrees Cesius

200

Anything that has mass and volume.

Matter 

200

A property that depends on the amount of matter

intensive property

200
state of matter with no definite shape and no definite volume
gas
200
State the freezing point of water in Fahreinheit, Celsius, and Kelvin.  

32 degrees F

0 degrees C 

273 K

200

Gold has a specific heat capacity of 0.128 J/g*C.

If a 14.3 g sample of unknown material rises in temperature from 25 to 52 C with the addition of 174 J of heat, what is its specific heat capacity, AND is it pure gold?

0.45 J/g*C.

No, it is not pure gold.


300

Water in a chlorinated pool is considered which classification of matter?


a. element
b. compound
c. homogeneous mixture
d. heterogeneous mixture

c. homogeneous mixture

300

A property that does not depend on the amount of matter 

intensive property

300
State of matter with no definite shape but has a definite volume
liquid
300
What is significant about -273 degrees Celsius?

It is equal to 0 Kelvin, the temperature at which all atomic motion ceases!

300

What is the temperature change in 355 mL of water upon absorbing 34 kJ of heat?

23 degrees Celsius temperature change

400

What is the SI base unit for mass?

kilogram  (kg)

400

A chemical change can be represented by a balanced ______________  ________________.

A chemical change can be represented by a balanced chemical equation.

400

During which type of reaction is energy released from the reaction as heat?

exothermic

400

Provide the 2 words that complete this statement:

_________ is a measure of the average kinetic energy of the particles in a material, and

_________ is the thermal energy that is transferred from a warmer to a cooler object.



Temperature


Heat

400

Convert 62 degrees Celsius to Fahrenheit.

144 F.

500

What type of change occurs when ice melts into liquid water?

Physical change

500

List an example of a heterogeneous mixture.

? ? ? ? ? All sorts of things!  ? ? ? ? 

500

Which statement is correct about the difference between liquids and gases of the same substance?

a. Both liquids and gases can be compressed into a smaller volume.
b. Liquids can be compressed, but gases cannot be compressed into a smaller volume.
c. Liquids cannot be compressed, but gases can be compressed into a smaller volume.
d. Neither liquids or gases can be compressed into a smaller volume.

c. Liquids cannot be compressed, but gases can be compressed into a smaller volume.

500

Convert 225 Joules to Calories.

5.38 x 10-2 Calories

500

The temperature of a lead (Pb) fishing weight rises from 26 C to 38 C as it absorbs 11.3 J of heat.  What is the mass of the fishing weight in grams?

(specific heat capacity of lead: 0.128 J/g*C)


7.36 grams Pb