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40 Chem 1 final DL

Last updated almost 5 years ago

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Elements, compounds and mixtures

Question 1

1.

Question 2

2.

Question 3

3.

Atomic structure and electron configuration

Question 4

4.

Question 5

5.

Question 6

6.

Question 7

7.

Question 8

8.

Question 9

9.

Question 10

10.

Question 11

11.

Question 12

12.

Question 13

13.

Question 14

14.

Periodic Trends and Periodic Table

Question 15

15.

Question 16

16.

Question 17

17.

Question 18

18.

Question 19

19.

Bonding, naming and chemical equations

Question 20

20.

Question 21

21.

Question 22

22.

Question 23

23.

Question 24

24.

Question 25

25.

The next section is naming formulas and determining the correct formula for the name. Use the flowcharts and your common ion list to do this. 

Question 26

26.

Question 27

27.

Question 28

28.

Question 29

29.

Question 30

30.

Question 31

31.

Question 32

32.

Question 33

33.

Questions 45 and 46 refer to the following equation:
__ Pb + __PbO2 + __H2SO4 --> __PbSO4 + __ H2O + energy

Question 34

34.

Question 35

35.

The mole, molar mass and conversions

Question 36

36.

Question 37

37.

Question 38

38.

Question 39

39.

Question 40

40.

Question 41

41.

Questions 57 - 59 refer to the following equation:
2CH3OH + 3O2 --> 2CO2 + 4H2O

Question 42

42.

Question 43

43.

Question 44

44.

Question 45

45.

Approximately how many elements exist in nature?

100

10,000

1,000

30

Which of the following is classified as an element?

all of the above

cereal

none of the above

gold

water

Which of the following would NOT be classified as a mixture?

coffee

lemonade

sugar

cereal

What is the mass of a 25Mg atom?

12

14

26

25

13

Isotopes of the same element have different:

atomic numbers

atomic masses

chemical behavior

positions on the periodic table

What is the electron configuration of potassium?

1s22s23s23p63d1

1s22s22p103s23p3

1s22s22p23s23p24s1

1s22s22p63s23p64s1

What is the shape of a 3p atomic orbital?

two perpendicular dumbbells

a dumbbell

a bar

a sphere

How many neutrons are there in a 13C atom?

8

12

7

13

6

Two atoms with the same number of protons but a different number of neutrons are called:

Ions

Neutral

Alpha particles

Beta particles

Isotopes

How many protons are there in a 13C atom?

6

8

12

13

7

As a consequence of the discovery by Rutherford, which model of the atoms is now believed to be true?

A model in which the protons, electrons, and neutrons are evenly distributed throughout the volume of the atom

A model in which the nucleus is made of protons, electrons, and neutrons

A model in which the nucleus is made of neutrons only

A model in which the region outside the nucleus is largely empty space in which the electrons are located

Which electron configuration is correct for S2-?

1s22s22p63s23p2

1s22s22p63s23p6

1s22s22p63s23p4

1s22s22p6

How many valence electrons are there in a silicon atom?

2

6

4

8

How many electrons are there in a Cl- ion?

18

17

16

36

35

Which of the following elements has properties the most similiar to calcium?

germanium

rubidium

strontium

yttrium

As you move from left to right across the second period of the periodic table:

the ionization energy increases

the atomic radii increases

the atomic mass decreases

the electron affinity decreases

Which of the following element had the smallest atomic radius?

phosporus

chlorine

sulfur

selenium

Electronegativity:

Generally increases from left to right across a period

Generally increases as you move down a group

Is generally higher for metals than for nonmetals

Is the electrical attraction of a negative ion to another negative ion

Which of the following element is in the halogen group?

potassium

copper

chlorine

calcium

In the chemical reaction in which carbon, hydrogen, and oxygen absorb heat and combine to form carbon dioxide and water, which of the following is considered to be a reactant?

heat

carbon dioxide

oxygen

water

Which of the following is true for all chemical reactions?

The total mass of the reactants increases

The total mass of the reactants equals the total mass of the products

The total mass of the products is greater than the total mass of the reactants

Water is given off

What is NOT true about ionic bonds?

Formed between metals and non metals

Formed by the transfer of an electron

Poor conductors when dissolved

Held together by opposite charges

Which substance is most likely ionic?

O2

H2O

CO2

CaS

BF3

What is the charge on the strontium ion?

2-

1-

1+

0

2+

What is happening to the electrons in a covalent bond between two atoms?

They are shared.

They become excited to a higher energy level

They release light

They are transferred

Select the correct name for: SiO2

calcium nitrogen trioxide

silver dioxide

sodium iodide

silicon dioxide

boron triple fluoride

boron trifluoride

calcium nitrate

nitrogen monoxide

dinitrogen pentoxide

calcium dinitrate

Select the correct name for: NaI

silver dioxide

boron trifluoride

boron triple fluoride

calcium nitrogen trioxide

dinitrogen pentoxide

sodium iodide

calcium nitrate

silicon dioxide

calcium dinitrate

nitrogen monoxide

Select the correct name for: N2O5

dinitrogen pentoxide

nitrogen monoxide

boron triple fluoride

calcium nitrogen trioxide

silver dioxide

calcium dinitrate

calcium nitrate

sodium iodide

boron trifluoride

silicon dioxide

Select the correct name for: Ca(NO3)2

calcium dinitrate

boron trifluoride

silicon dioxide

sodium iodide

nitrogen monoxide

calcium nitrogen trioxide

boron triple fluoride

calcium nitrate

dinitrogen pentoxide

silver dioxide

Choose the formula for: sulfur hexafluoride

I3Br

AsCl5

MgS

P4O7

FeCl2

P4O6

Fe2Cl

MgSO3

SF6

IBr3

Choose the formula for: arsenic pentachloride

IBr3

FeCl2

I3Br

P4O6

SF6

MgSO3

AsCl5

Fe2Cl

P4O7

MgS

Choose the formula for: iron(II) chloride

MgS

I3Br

SF6

IBr3

P4O6

Fe2Cl

AsCl5

P4O7

MgSO3

FeCl2

Choose the formula for: magnesium sulfite

MgS

IBr3

P4O6

P4O7

SF6

I3Br

AsCl5

MgSO3

FeCl2

Fe2Cl

Which of the following coefficient sets matches with a balanced equation?

1, 1, 2 --> 2, 2

1, 2, 3 --> 2, 1

2, 2, 1 --> 1, 2

2, 2, 4 --> 4, 4

Balance this baby! Which of the following coefficient sets matches with a balance equation?
__Al + __ Pb(NO3)2 --> __Al(NO3)3 + __Pb

3, 2 --> 3, 2

2, 3 --> 2, 3

2, 1 --> 1, 2

1, 1 --> 1, 1

What is the molar mass of CO2?

40 g/mol

none of the these

28 g/mol

56 g/mol

44 g/mol

The number of seconds in an 8 hr school day can be calculated as:

1 s X 1 min X 8 hr
           60 s    60 min

60 s X 1 min  X 1 hr
             60 s    60 min

8 hr X 60 min X 60 s
              8 hr     60 min

8 hr X 60 min X  60 s
             1 hr       1 min

What is the molar mass of CF4?

88 g/mol

76.0 g/mol

31.0 g/mol

12.0 g/mol

What is the mass of 1 mole of (NH4)2SO4?

132.1 g/mol

118.1 g/mol

150.1 g/mol

210.2 g/mol

114.1 g/mol

How many liters are there in 5.3 moles of SO2 gas?

64.1 L

119 L

0.24 L

3.2 x 1024 liters

What is the mass of 3.50 x 1023 CF4 molecules?

3.08 x 1025 g

151 g

51.2 g

88 g

How many moles of O2 are required to react with 5 moles of CH3OH?

6.7 moles

5 moles

7.5 moles

3.3 moles

If 4.3 g of CH3OH reacts, how many grams of CO2 will be formed?

5.9 g

11.8 g

6.5 g

8.9 g

If 4.3 g of CH3OH reacts, how many moles of water will be formed?

5 moles

0.13 moles

0.26 moles

4.3 moles

What is avogadro’s number?

3 x108

6.02 x1023

6.63 x10-34

22.4

3.1415