Measurement and Matter Review

Sig Figs

4. For the following measurements, indicate how many significant figures there are:

a) 34 g ___ b) 504 L ___ c) 3.4 x 103g _____ d) 23.45 mg ___

e) 101 km ___ f) 7.0 x 10-5mm___ g) 5040 L ___ h) 0.0190 mm ___

i) 20 mg ___ j) 20. km ___ k) 20.0 g ___ l) 0.02 L ___

6. Perform all calculations and express your answer with the appropriate sig figs & units:

a) 67 cm x 55 cm = 3700 cm2b) 4.29 m x 9.8 m = ______

c) 870 mm x 430 mm = ______d) 0.034 g/L x 8.8 L = ______

e) 1.405 m x 6.39 m = ______f) 3.56 cm x 2.45 cm x 0.83 cm = ______

g) 45.9 mi ÷ 1.50 hr = ______h) (4.6x107m) x (7.32x10-3m) = ______

i) (4.6x107g) / (7.32x10-3cm3) = ______j) 3.56 g ÷ (2.6 cm x 4.3 cm x 7.8 cm) = _____

7) Perform all calculations & give your answers with the appropriate units and sig figs.

a) 6.74 g + 2.1 g = ______b) 1200 kg + 286 kg = ______c) 13.531 s + 4.1 s = _____

d) 7800 cm - 2 cm = ______e) 784.326 m - 2 m = 782m f) 2.54 g - 0.000034 g = ______

8) Show your work for all of the following calculations. Remember units and sig figs.

a) A box is 235.8 cm by 45.2 cm by 7.9 cm. Its volume (V = l x w x h) is: ______

c) A 5627 g brick measures 5.60 cm x 4.51 cm x 24.71 cm. Its density (D=m/V) is: ______

11) An object with a mass of 7.5g raises the level of water in a graduated cylinder from 25.1mL to

30.1mL. What is the density of the object?

12) The density of aluminum is 2.7g/mL. What is the volume of 8.1g?

14) A 2.75 kg sample of a substance occupies a volume of 250.0 cm3. Find its density in g/cm3

15)A rectangular block of lead (Pb) measures 20.0 mm X 30.0 mm X 45.0 mm. If the density of Pb is 11.34 g/cm3, calculate the mass of the block.

Classification of Matter

  1. Identify the following as representing either a physical change (P) or a chemical change (C)

  1. Wood turns to ash when burned
  2. Frying an egg
  3. Water freezes
  4. Iron melts
  5. Alcohol evaporates on a countertop
  6. Grains fermenting

  1. Identify the following properties as eitherPHYSICAL(P) or CHEMICAL(C)andEXTENSIVE(E) or INTENSIVE(I):
  1. A liquid has a volume of 50.2 ml
  2. Ethanol is flammable
  3. Copper has a density of 8.92 g/cm3
  4. The iron sample has a mass of 26.4g
  5. Sodium has a silver color
  6. Water has a boiling point of 100°C
  7. Salt solutions conduct electricity
  8. Acids and bases are corrosive
  9. Sugar is soluble in water
  10. Silver reacts with nitric acid
  11. Water evaporates to water vapor
  12. Methane is combustible
  13. Coke has a pH of about 3
  14. Glycerol is a viscous liquid

  1. Matching:
  1. Homogeneous Mixturei. Matter composed of a simple substance that cannot be broken
  2. Compound down any further
  3. Elementii. Matter composed of more than one substance that looks different
  4. Heterogeneous Mixture throughout

iii. Pure substance created chemically that has different properties than

the substances that form it

iv. Matter composed of more than one substance that looks different

throughout.

v. These are given symbols like ‘Ar’, ‘Zn’, ‘W’, and ‘Xe’ and are arranged

in a table called the Periodic Table

  1. Identify the following as either an ELEMENT (E), COMPOUND (C), HOMOGENEOUS MIXTURE (S) or HETEROGENEOUS MIXTURE (H)

  1. Vinegar and Oil
  2. Dry Ice (solid carbon dioxide (CO2))
  3. Brass allow (Cu and Zn)
  4. Table Salt (NaCl)
  5. Oxygen gas (O2)
  6. Salt dissolved in water
  7. Chex Mix
  8. Gold Bracelet (Au)
  9. Clear apply juice
  10. Sugar (C12H22O11)
  11. Sugar dissolved in water
  12. Air

Label the following on a periodic table: (check out for additional help)

Metals

Nonmetals

Metalloids

Transition metals

Inner transition metals

Alkali metals

Alkaline earth metals

Halogens

Noble gases (inert gases)

Stair case

Show which way are periods

Show which way are groups/families