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Basics of Chemistry

Total questions: 56

Worksheet time: 34mins

Name
Class
Date
1.

What is the molality of a solution made by dissolving 2 moles of NaOH in 400 grams of water?

a)

5 mol/kg. solvent

b)

4 mol/kg solvent

c)

3 mol/kg. solvent

d)

2.5 moles /kg solvent

2.
Which sweet tea would you expect to taste the sweetest?
a)
1M
b)
3M
c)
3.1M
d)
2.5M
3.
What is the mass of 0.75 moles of (NH4)3PO4?
a)
101.75 g
b)
121.75 g
c)
111.75 g
d)
131.75 g
4.

What do molarity and molality have in common?

a)

Both have "moles solute" in the numerator

b)

Both have "kg solvent" in the denominator

c)

Both have "L solution" in the denominator

d)

Both have "moles solution" in the denominator

5.

How do you convert from grams to moles?

a)

Divide by the molar mass

b)

Multiply by the molar mass

c)

Divide by Avogadro's number

d)

Multiply by Avogadro's number

6.

What is the molality of a solution in which 3.0 moles of NaCl is dissolved in 1.5 Kg of water?

a)

2.0 M

b)

0.22 m

c)

135 m

d)

2.0m

7.

Which of the following types of solutions has more room to dissolve solute?

a)

supersaturated

b)

saturated

c)

unsaturated

8.
How many liters would you need to make a 1 M solution if you have 6 mol of Sodium Hydroxide? 
a)
2
b)
3
c)
4
d)
6 
9.
How many grams of solute are dissolved in 125.0 mL of 5.00 M NaCl (MM = 58.45)?
a)
0.625 g NaCl
b)
625 g NaCl
c)
36.5 g NaCl
d)
0.04 mol NaCl
10.
Which of the following has the most NaCl (MM = 58.44)?
a)
100 mL of a 1.8 M solution
b)
50 mL of a 4.1 M solution
c)
9.35 grams
d)
1 mole
11.
Atoms of the same element that have different masses are called
a)
moles
b)
isotopes
c)
nuclides
d)
neutrons
12.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
13.
This is a 
a)
chemical symbol 
b)
chemical sign 
c)
chemical location 
d)
chemical formula 
14.
Rows on the period table are called _____ while columns are called _____.
a)
groups, families
b)
groups, periods
c)
periods, groups
d)
families, groups
15.

Which of the following is the most electronegative

a)

Chlorine

b)

Fluorine

c)

Nitrogen

d)

Iodine

16.

Is 'Tall' a qualitative or quantitative observation?

a)

Qualitative

b)

Quantitative

17.
You know that 12 inches = 1 foot.  Convert 60 inches to feet.
a)
720 feet
b)
5 feet
c)
5 inches
d)
72 feet
18.

Which is NOT an SI base unit?

a)

second

b)

kilogram

c)

degree Celsius

d)

meter

19.
Electrons occupy orbitals of lowest energy first is part of what electron configuration rule?
a)
Hund’s Rule
b)
Aufbau Principle
c)
Pauli Exclusion Principle
20.
There are 4 different types of subshells s,p,d,f
a)
true
b)
false
21.
Which of the following is a p block element?
a)
Ca
b)
Ar
c)
Re
d)
Au
22.

Which of the following has the MOST surface area?

a)

A single 5 gram ice cube

b)

5 grams of crushed ice

c)

5 grams of shaved ice

23.

If 400 mL of a 8.0 M solution is diluted to a molarity of 5.3M, about how much solvent volume was added?

a)

200 mL

b)

600 mL

c)

400 mL

d)

180 mL

24.
Atoms with similar properties are most likely located...
a)
in the same period.
b)
in the same group.
c)
in different periods.
d)
to the right and left of each other.
25.
Which elements have the most similar chemical properties?
a)
K and Na
b)
K and Ca
c)
K and Cl
d)
K and S
26.

The name of the elements in groups 3-12 (middle section) of the periodic table is the...

a)

Halogens

b)

Alkali Metals

c)

Transition Metals

d)

Solid Metals

27.
For a metal, the _________ the ionization energy, the _________ reactive.
a)
lower, less
b)
lower, more
c)
higher, less
d)
higher, more
28.
The majority of elements on the periodic table are
a)
man made.
b)
nonmetals.
c)
metals.
d)
gases.
29.
Which group has the most reactive nonmetals?
a)
alkali metals
b)
noble gases
c)
metalloids
d)
halogens
30.

The tendency of an atom to attract a shared pair of electrons

a)

Atomic Radii

b)

Ionization Energy

c)

Electronegativity

d)

Electron Afinity

e)

Oxidation Number

31.

Ionization energy trends is . . . .

a)

becomes greater up and to the right of the periodic table.

b)

becomes greater down and to the right of the periodic table.

c)

becomes greater up and to the left of the periodic table.

d)

becomes greater down and to the left of the periodic table.

32.

The metallic character . . . .

a)

decreases going across a period and tends to increase going down a group.

b)

increases going across a period and tends to increase going down a group.

c)

decreases going across a period and tends to decrease going down a group.

d)

increases going across a period and tends to decrease going down a group.

33.
What is the shape of p orbitals? 
a)

Cloverleaf shaped

b)
Spherical shaped
c)
Flower shaped
d)
Dumbbell shaped
34.
How many orbitals are there in the "d" sublevel?
a)
1
b)
3
c)
5
d)
7
35.
How many electrons can the f sublevel hold?
a)
14
b)
10
c)
6
d)
4
36.
Which sublevel has the highest energy?
a)
3s
b)
3d
c)
3p
37.
What is the maximum number of orbitals on the 2nd main energy level?
a)
8
b)
9
c)
4
d)
2
38.
The Quantum Mechanical Model is the most recent/modern atomic model.
a)
True
b)
False
39.
The major difference between a 1s orbital and a 2 s orbital is that
a)
the 2 s orbital is at a higher energy level.
b)
the 2s orbital has a slightly different shape.
c)
the 1 s orbital can have only one electron.
d)
the 2s orbital can hold more electrons.
40.
With the quantum model of the atom, scientists have come to believe that determining an electron's exact location around the nucleus.
a)
can be done before 2005.
b)
can be done only with specialized equipment.
c)
is impossible.
d)
can be done easily.
41.
A single orbital in the 3d level can hold ______ electrons.
a)
6
b)
2
c)
3
d)
10
42.
The higher the frequency the ______ the energy. 
a)
higher
b)
lower
c)
neither, stays the same
43.
The angular momentum quantum number indicates the
a)

orientation of an orbital around the nucleus.

b)
shape of an orbital.
c)
direction of the spin of the electron in its orbital.
d)
main energy level of an orbital.
44.
An orbital that can never exist according to the quantum description of the atom is
a)
6d.
b)
3f.
c)
3d.
d)
8s.
45.

How many energy levels are currently present on the periodic table?

a)

18

b)

7

c)

6

d)

4

46.

What sublevels are present in the 5th energy level of an atom?

a)

s

b)

p and d

c)

d and f

d)

s p and d

e)

s p d and f

47.

Why do atoms bond?

a)

They typically don't bond

b)

To add or take away energy levels

c)

To have a full valence shell

d)

To have a full inner shell

48.

Ionic bonding is between a

a)

non-metal and non-metal

b)

metal and non-metal

c)

metal and metal

d)

Depends on the situation

49.

Which bond does this picture best represent?

a)

Metallic bond

b)

ionic bond

c)

covalent bond

d)

James Bond

50.

Predict the bond between Mg and Cl

a)

covalent

b)

ionic

c)

metallic

d)

none of the above

51.

What category of elements usually form a positive ion?

a)

Metals

b)

Non-metals

c)

metalloids

d)

Noble gases

52.

What is the number of valence electrons for Neon and the other Noble Gases?

a)

5

b)

6

c)

7

d)

8

53.
If an oxygen atom has 8 protons (+) and 10 electrons (-), what is it's charge?
a)
O10-
b)
O8+
c)
O2-
d)
O10+
54.
Soluble in Water
a)
Ionic
b)
Covalent
55.

Which type of bond involves an unequal sharing of electrons?

a)

ionic

b)

polar covalent

c)

non-polar covalent

d)

metallic

56.

Which of the following is the most polar?

a)

HF

b)

HCl

c)

HBr

d)

HI

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