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Problem 1.11. Do the following statements describe chemical or physical properties? Oxygen gas supports combustion Fertilizers help to increase agricultural production Water boils below 100°C on top of a mountain Lead is denser than aluminum Sugar tastes sweet. Chemical. Chemical.

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problem 1 11
Problem 1.11

Do the following statements describe chemical or physical properties?

  • Oxygen gas supports combustion
  • Fertilizers help to increase agricultural production
  • Water boils below 100°C on top of a mountain
  • Lead is denser than aluminum
  • Sugar tastes sweet

Chemical

Chemical

Physical

Physical

Chemical

problem 1 12
Problem 1.12

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

  • The helium gas inside a balloon tends to leak out after a few hours
  • A flashlight beam slowly gets dimmer and finally goes out
  • Frozen orange juice is reconstituted by adding water to it
  • The growth of plants depends on the sun’s energy in a process called photosynthesis
  • A spoonful of table salt dissolves in a bowl of soup

Physical

Chemical

Physical

Chemical

Physical

problem 1 13
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

Li

slide4
3

lithium

6.941

Problem 1.13

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

Li

slide5
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

F

slide6
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

9

F

fluorine

19.00

slide7
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

P

slide8
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

15

P

phosphorus

30.97

slide9
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

Cu

slide10
29

copper

63.55

Problem 1.13

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

Cu

slide11
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

As

slide12
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

33

As

arsenic

74.92

slide13
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

Zn

slide14
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

30

Zn

zinc

65.39

slide15
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

Cl

slide16
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

17

Cl

chlorine

35.45

slide17
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

Pt

slide18
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

78

Pt

platinum

195.1

slide19
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

Mg

slide20
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

12

Mg

magnesium

24.31

slide21
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

U

slide22
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

92

U

uranium

238.0

slide23
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

Al

slide24
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

13

Al

aluminum

26.98

slide25
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

Si

slide26
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

14

Si

silicon

28.09

slide27
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

Ne

slide28
Problem 1.13
  • Give the names of the elements represented by the chemical symbols:

10

Ne

neon

20.18

problem 1 14
Problem 1.14

Give the chemical symbols for the following elements:

  • potassium
  • tin
  • chromium
  • boron
  • barium
  • plutonium
  • sulfur
  • argon
  • mercury

K

Sn

Cr

B

Ba

Pu

S

Ar

Hg

problem 1 15
Problem 1.15

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

  • hydrogen
  • water
  • gold
  • sugar
slide31
Problem 1.15

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

  • hydrogen
  • water
  • gold
  • sugar

elements in yellow

problem 1 16
Problem 1.16

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

  • seawater
  • helium gas
  • sodium chloride
  • a bottle of soft drink
  • a milkshake
  • air in a bottle
  • concrete

homogeneous mixture

element

compound

homogeneous mixture

heterogeneous mixture

homogeneous mixture

heterogeneous mixture

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