Question

1 classify each of the following as an extensive or intensive property
a. mass
b. length
c. volume
d. boiling point
e. density
f. conductivity
2 classify each of the following as physical or chemical change
a. ice melting
b. paper burning
c. water evaporating
d. food digesting
e. shredding paper
3 list the metric prefixes in order from kilo - to milli -
base
4 convert the following using linear conversions (moving decimals) be sure to label your answers!
a. 4.25 kg to dg
b. 30567.23 ml to hl
c. 0.0000045 km to cm

Explanation:

Step1: Recall property definitions

Extensive properties depend on amount of matter; intensive don't. Physical changes don't change substance identity; chemical changes do. Metric prefixes have specific values for conversion.

Step2: Classify properties

a. Mass depends on amount, so it's extensive.
b. Length depends on amount, so it's extensive.
c. Volume depends on amount, so it's extensive.
d. Boiling - point is same for same substance regardless of amount, so it's intensive.
e. Density is mass/volume and is same for same substance regardless of amount, so it's intensive.
f. Conductivity is same for same substance regardless of amount, so it's intensive.

Step3: Classify changes

a. Ice melting is change of state, substance is still water, so it's physical.
b. Paper burning produces new substances like ash and gases, so it's chemical.
c. Water evaporating is change of state, substance is still water, so it's physical.
d. Food digesting involves chemical reactions to break down substances, so it's chemical.
e. Shredding paper is just changing form, substance is still paper, so it's physical.

Step4: List metric prefixes

Kilo - (k, $10^{3}$), Hecto - (h, $10^{2}$), Deca - (da, $10^{1}$), Base unit (1), Deci - (d, $10^{- 1}$), Centi - (c, $10^{-2}$), Milli - (m, $10^{-3}$)

Step5: Perform conversions

a. Since 1 kg = 1000 g and 1 g = 10 dg, 4.25 kg = 4.25×1000×10 dg = 42500 dg.
b. Since 1 hL = 100000 mL, 30567.23 mL=$\frac{30567.23}{100000}$ hL = 0.3056723 hL.
c. Since 1 km = 100000 cm, 0.0000045 km=0.0000045×100000 cm = 0.45 cm.

Answer:

1.
a. Extensive
b. Extensive
c. Extensive
d. Intensive
e. Intensive
f. Intensive
2.
a. Physical
b. Chemical
c. Physical
d. Chemical
e. Physical

1. Kilo - , Hecto - , Deca - , Base, Deci - , Centi - , Milli -

4.
a. 42500 dg
b. 0.3056723 hL
c. 0.45 cm