Sign up for FREE

40 Chem 1 final DL m

Last updated almost 5 years ago

45 questions

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

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?

1,000

100

30

Which of the following is classified as an element?

water

all of the above

cereal

gold

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

lemonade

sugar

cereal

What is the mass of a 25Mg atom?

12

14

25

13

Isotopes of the same element have different:

positions on the periodic table

atomic masses

atomic numbers

What is the electron configuration of potassium?

1s22s22p103s23p3

1s22s22p63s23p64s1

1s22s23s23p63d1

What is the shape of a 3p atomic orbital?

a sphere

a bar

a dumbbell

How many neutrons are there in a 13C atom?

13

6

7

12

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

Isotopes

Beta particles

Alpha particles

Ions

How many protons are there in a 13C atom?

7

13

12

6

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-?

1s22s22p6

1s22s22p63s23p4

1s22s22p63s23p6

How many valence electrons are there in a silicon atom?

6

4

2

How many electrons are there in a Cl- atom?

18

17

16

35

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

strontium

germanium

yttrium

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

the electron affinity decreases

the ionization energy increases

the atomic radii increases

Which of the following element had the smallest atomic radius?

sulfur

selenium

chlorine

Electronegativity:

Generally increases from left to right across a period

Is generally higher for metals than for nonmetals

Generally increases as you move down a group

Which of the following element is in the halogen group?

potassium

calcium

chlorine

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?

water

carbon dioxide

oxygen

Which of the following is true for all chemical reactions?

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

The total mass of the reactants increases

What is NOT true about ionic bonds?

Held together by opposite charges

Poor conductors when dissolved

Formed between metals and non metals

Which substance is most likely ionic?

BF3

CaS

CO2

O2

What is the charge on the strontium ion?

1+

0

1-

2+

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

They are shared.

They release light

They become excited to a higher energy level

They are transferred

Select the correct name for: SiO2

silver dioxide

sodium iodide

calcium dinitrate

silicon dioxide

Select the correct name for: NaI

dinitrogen pentoxide

silver dioxide

nitrogen monoxide

sodium iodide

silicon dioxide

Select the correct name for: N2O5

dinitrogen pentoxide

calcium nitrate

calcium dinitrate

calcium nitrogen trioxide

nitrogen monoxide

Select the correct name for: Ca(NO3)2

calcium dinitrate

dinitrogen pentoxide

calcium nitrate

nitrogen monoxide

calcium nitrogen trioxide

Choose the formula for: sulfur hexafluoride

P4O6

SF6

P4O7

Fe2Cl

MgS

Choose the formula for: arsenic pentachloride

MgS

MgSO3

SF6

P4O7

AsCl5

Choose the formula for: iron(II) chloride

P4O7

Fe2Cl

P4O6

AsCl5

FeCl2

Choose the formula for: magnesium sulfite

AsCl5

SF6

P4O7

MgSO3

MgS

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

1, 1, 2 --> 2, 2

1, 2, 3 --> 2, 1

2, 2, 1 --> 1, 2

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

2, 3 --> 2, 3

2, 1 --> 1, 2

3, 2 --> 3, 2

What is the molar mass of CO2?

56 g/mol

44 g/mol

40 g/mol

28 g/mol

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

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

60 s X 1 min  X 1 hr
             60 s    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

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

132.1 g/mol

150.1 g/mol

114.1 g/mol

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

119 L

0.24 L

64.1 L

What is the mass of 3.50 x 1023 CF4 molecules?

51.2 g

88 g

151 g

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

5 moles

6.7 moles

7.5 moles

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

8.9 g

6.5 g

5.9 g

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

0.13 moles

4.3 moles

0.26 moles

What is avogadro’s number?

6.02 x1023

3 x108

3.1415

6.63 x10-34