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