Problem 1.11Problem 1.11

Do the following statements describe Do the following statements describe chemical or physical properties?chemical or physical properties?

a)a) Oxygen gas supports combustionOxygen gas supports combustionb)b) Fertilizers help to increase agricultural Fertilizers help to increase agricultural

productionproductionc)c) Water boils below 100°C on top of a Water boils below 100°C on top of a

mountainmountaind)d) Lead is denser than aluminumLead is denser than aluminume)e) Sugar tastes sweetSugar tastes sweet

Chemical

Chemical

PhysicalPhysical

Chemical

Problem 1.12Problem 1.12

Does each of the following describe a physical Does each of the following describe a physical change or a chemical change?change or a chemical change?

a)a) The helium gas inside a balloon tends to leak out after The helium gas inside a balloon tends to leak out after a few hoursa few hours

b)b) A flashlight beam slowly gets dimmer and finally A flashlight beam slowly gets dimmer and finally goes outgoes out

c)c) Frozen orange juice is reconstituted by adding water Frozen orange juice is reconstituted by adding water to itto it

d)d) The growth of plants depends on the sun’s energy in a The growth of plants depends on the sun’s energy in a process called photosynthesisprocess called photosynthesis

e)e) A spoonful of table salt dissolves in a bowl of soupA spoonful of table salt dissolves in a bowl of soup

Physical

Physical

Physical

Chemical

Chemical

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

Li

lithium

3

6.941

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

Li

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

F

fluorine

9

19.00

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

F

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

P

phosphorus

15

30.97

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

P

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

Cu

copper

29

63.55

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

Cu

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

As

arsenic

33

74.92

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

As

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

Zn

zinc

30

65.39

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

Zn

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

Cl

chlorine

17

35.45

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

Cl

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

Pt

platinum

78

195.1

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

Pt

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

Mg

magnesium

12

24.31

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

Mg

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

U

uranium

92

238.0

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

U

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

Al

aluminum

13

26.98

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

Al

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

Si

silicon

14

28.09

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

Si

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

Ne

neon

10

20.18

Problem 1.13Problem 1.13

Give the names of the elements represented Give the names of the elements represented by the chemical symbols:by the chemical symbols:

Ne

Problem 1.14Problem 1.14

Give the chemical symbols for the following Give the chemical symbols for the following elements:elements:

a)a) potassiumpotassiumb)b) tintinc)c) chromiumchromiumd)d) boronborone)e) bariumbariumf)f) plutoniumplutoniumg)g) sulfursulfurh)h) argonargoni)i) mercurymercury

KSnCrBBaPuS

ArHg

Problem 1.15Problem 1.15

Classify each of the following substances as Classify each of the following substances as an element or a compound:an element or a compound:

a)a) hydrogenhydrogen

b)b) waterwater

c)c) goldgold

d)d) sugarsugar

Problem 1.15Problem 1.15

Classify each of the following substances as Classify each of the following substances as an element or a compound:an element or a compound:

a)a) hydrogenhydrogen

b)b) waterwater

c)c) goldgold

d)d) sugarsugar

elements in yellow

Problem 1.16Problem 1.16

Classify each of the following as an element, a Classify each of the following as an element, a compound, a homogeneous mixture, or a compound, a homogeneous mixture, or a heterogeneous mixture.heterogeneous mixture.

a)a) seawaterseawater

b)b) helium gashelium gas

c)c) sodium chloridesodium chloride

d)d) a bottle of soft drinka bottle of soft drink

e)e) a milkshakea milkshake

f)f) air in a bottleair in a bottle

g)g) concreteconcrete

homogeneous mixtureelement

compoundhomogeneous mixture

heterogeneous mixturehomogeneous mixture

heterogeneous mixture