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22-23 Midterm Review (ACP)

Total questions: 107

Worksheet time: 2hrs 23mins

Name
Class
Date
1.

All matter is made up of tiny building blocks called:

a)

mass

b)

atoms

c)

cells

d)

legos

2.
Making a mixture results in ___________________ only.
a)
chemical reactions
b)
separate parts
c)
physical changes
d)
two subtances
3.

Atoms of a particular "type" are known as:

a)

Cells

b)

Elements

c)

Molecules

d)

Compounds

4.

Does the following represent an "Atom" or a "Molecule"?

C6H12O6

a)

atom

b)

molecule containing all the same element

c)

molecule containing different elements

5.

Does the following represent an "Atom" or a "Molecule"?

S8

a)

atom

b)

molecule containing all the same element

c)

molecule containing different elements

6.

In this class, "particles" can refer to:

a)

atoms only

b)

molecules only

c)

both atoms and molecules

7.

You can separate the sugar and water from this sample of lemonade by:

a)

passing it through filter paper

b)

boiling off the water

c)

using a magnet

d)

a chemical reaction

8.
What type of mixture is this?
a)
heterogeneous 
b)
homogeneous
9.

Physical properties are

a)

properties that can be observed or measured without changing the identity of the substance

b)

properties that describe how a substance may change into a completely different substance

10.
Is freezing a physical or chemical change?
a)
Physical 
b)
chemical
11.

Over time, a piece of metal appeared to be covered in rust. Which best describes the change to the metal?

a)

It was a chemical change, because the bike was a different color.

b)

It was a chemical change, because the new atoms were created.

c)

It was a chemical change, because rust is a new substance with a different composition than the original metal.

d)

It was a physical change, because rust can be removed from the metal.

12.

A precipitate forms when:

a)

a liquid freezes into a solid

b)

two liquids dissolve in one another to form a solution

c)

a solid forms when two liquids are mixed

d)

a substance undergoes a phase change

13.
These are mixtures that are the same throughout. 
a)
homogeneous mixtures 
b)
heterogeneous mixtures 
c)
mixed mixtures 
14.

What is H2SO4 made up of?

a)

2 hydrogen, 1 sulfur, 4 oxygen

b)

1 hydrogen, 2 sulfur, 4 oxygen

c)

2 hydrogen & 4 sodium

d)

1 hydrogen & 6 sodium

15.
Water and alcohol are easily separated by distillation because of their
a)
 different melting points
b)
different colours
c)
different densities
d)
different boiling points
16.
a)

Filtrate

b)

Dessicant

c)

Centrifuge

d)

Filtrant

e)

Decanted liquid

17.

a)

Distillation

b)

Centrifugation

c)

Filtration

d)

Chromatography

18.

a)

C, H6, O7

b)

CH4, 2O2, H2O

c)

CH6O7

d)

CH4, 4O, H2O

19.

a)

2MgCl2

b)

Mg2Cl4

c)

2Mg, 4Cl

d)

2Mg4Cl

20.

Mixture (A & B) Mass: 3.0g

Mass of dry filter paper: 1.0g

Mass of filter paper with B on it: 2.5g


What is the mass of B?

(a)  

21.

Mixture (A & B) Mass: 2.0g

Mass of A: 1.2g

Mass of B: 0.8g


What is % composition of A?

(a)  

22.

Which is NOT a sign of a chemical reaction?

a)

Color change

b)

Melting

c)

Production of gas bubbles

d)

Releasing an odor

23.

Select all characteristics that can apply to a MIXTURE

a)

Not chemically bonded together

b)

One chemical symbol can describe it

c)

Looks like one substance

d)

Composition of each particle is the same

24.

Select all that apply.

a)

Atoms

b)

Molecules

c)

Element

d)

Compound

25.

Select all that apply.

a)

Atoms

b)

Molecules

c)

Element

d)

Compound

26.
How is the number of neutrons in the nucleus of an atom calculated?
a)
Add the number of e- and p+ together
b)
Subtract the number of e- from p+
c)
Subtract the number of p+ from the mass number
d)
Add the mass number to the number of e-
27.
An atom has an atomic number of 15 and a mass number of 31. How many protons are there in the atom?
a)
15
b)
31
c)
16
d)
47
28.
An atom has an atomic number of 15 and a mass number of 31. How many protons are there in the atom?
a)
15
b)
31
c)
16
d)
47
29.
In order for an atom to be neutral what has to be true?
a)
The atom has more protons than neutrons
b)
The atom has more neutrons than protons
c)
The atom has the same number of protons and neutrons
d)
The atom has the same number of protons and electrons
30.
Most of the mass in an atom is made up of _____________________?
a)
protons and electrons
b)
protons and neutrons
c)
neutrons and electrons
d)
electrons and quarks
31.

Which of the following determines the identity of an element?

a)

number of protons

b)

atomic mass

c)

number of neutrons

d)

number of shells

32.

An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

a)

20

b)

10

c)

35

d)

25

33.

The NUCLEUS has a _____ charge because it contains p+ and no.

a)

positive

b)

neutral

c)

negative

34.

The ELECTRON CLOUD has a _____ charge because it contains e- .

a)

positive

b)

neutral

c)

negative

35.
a)

This is a STABLE nucleus

b)

This is an UNSTABLE nucleus

36.
a)

This atom has a STABLE nucleus

b)

This atom has an UNSTABLE nucleus

37.

What determines the amount of space an atom takes up?

a)

the nucleus

b)

the electron cloud

38.

Consider what makes up the majority of the MASS of an atom and the VOLUME of an atom. Which combination is correct?

a)

MASS = nucleus; VOLUME = e- cloud

b)

MASS = e- cloud; VOLUME = nucleus

39.

The more protons in an atom, the ____ the attraction between the nucleus and the electrons in the e- cloud.

a)

weaker

b)

stronger

40.

Atoms on the right (->) side are SMALLER because these atoms have ___ protons which exert a ______ pull on the electrons and pull them in closer.

a)

less, stronger

b)

less, weaker

c)

more, weaker

d)

more, stronger

41.
a)

This IS the MASS NUMBER of a Cu atom.

b)

This is NOT the same as the MASS NUMBER of a Cu atom.

42.
For an electron to change from ground state to an excited stated it must...
a)
Absorb energy
b)
Release energy
43.

True or False: The ground state is the highest energy state of an atom.

a)

True

b)

False

44.

What is the light that you can see called?

a)

observatory light

b)

ultraviolet light

c)

visible light

d)

infrared light

45.

Diagram below shows

a)

Emission spectrum

b)

Absorption spectrum

c)

Line absorption spectrum

46.
Emission of light from an atom occurs when an electron
a)
drops from a higher to a lower energy level.
b)
   jumps from a lower to a higher energy level.   
c)
   moves within its atomic orbital.
d)
falls into the nucleus.
47.
When talking about energy levels in an atom, what is an "excited state"?
a)
The highest energy state of an atom.
b)
Any level higher than the ground state.
c)
The lowest energy state of an atom.
d)
When an atom loses an electron
48.
Why are line emission spectra of elements called "atomic fingerprints"?
a)
They are all the same
b)
They are all unique
c)
They are all similar
d)
They all contain colored light
49.
What is the unknown spectra?
a)
beryllium
b)
copper
c)
manganese
d)
strontium
50.
Which elements are in the unknown sample?
a)
A and B
b)
B and C
c)
A and D
d)
B and D
51.

Which element(s) is/are in Unknown W?

a)

Cadmium, Potassium, and Helium

b)

Hydrogen, Potassium, and Lithium

c)

Cadmium and Sodium

d)

Only Sodium

52.

The unknown emissions spectra belongs to the element

a)

Hydrogen

b)

Mercury

c)

Neon

d)

Sodium

53.

The unknown emissions spectra belongs to the element

a)

Hydrogen

b)

Mercury

c)

Neon

d)

Helium

54.
The blue section of the wave is measuring _________________.
a)
wavelength
b)
crest
c)
trough
d)
amplitude 
55.

Look carefully at the picture. It shows an electron in the excited state on the left, and the electron returning to its ground state on the right. When the electron return to the ground state it emits a_______________________.

a)

blast of cold air

b)

electrostatic charge

c)

proton

d)

photon (light)

56.

The color of emitted light with lowest energy is

a)

violet

b)

green

c)

red

d)

indigo

57.

What number should you always write on the left of the unit "mole"?

a)

the mass on the periodic table

b)

22.4

c)

1

d)

6.02x1023

58.

What number should you always write on the left of the unit "g"?

a)

the mass from the periodic table

b)

22.4

c)

1

d)

6.02x1023

59.

You should write the unit you want to cancel out on the ___ of the conversion factor.

a)

top

b)

bottom

60.
a)

1 mole

b)

1 g

c)

24.3 g

d)

6.02x1023 g

61.
a)

1 mole

b)

1 g

c)

136.4 g

d)

6.02x1023 g

62.
a)

1 mole

b)

1 molecule

c)

6.02x1023 moles

d)

6.02x1023 molecules

63.
a)

1 mole

b)

63.5 g

c)

6.02x1023 moles

d)

6.02x1023 g

64.
a)

1 mole

b)

207.2 g

c)

207.2 moles

d)

6.02x1023 g

65.
a)

1 mole

b)

27.0 atoms

c)

6.02x1023 atoms

d)

6.02x1023 moles

66.
a)

1 mole

b)

38.0 L

c)

6.02x1023 moles

d)

22.4 L

67.
a)

1 mole

b)

18.0 L

c)

6.02x1023 moles

d)

22.4 L

68.

According to the Law of Conservation of Matter, which of the following occurs during a chemical reaction?

a)

Matter is not created or destroyed, atoms just rearrange themselves.

b)

New atoms are created as new products form.

c)

Original atoms are destroyed as new products form.

d)

Chemical bonds can never be broken.

69.

Which of the following CAN be broken apart or formed during a chemical reaction?

a)

atoms

b)

Molecules and compounds

c)

protons

70.
Name the part in red:

H2 + O2 -> H2O
a)
Coefficient
b)
Product
c)
Reactant
d)
Subscript
71.
Name the part in red:

H2 + O2 -> H2O
a)
Coefficient
b)
Product
c)
Yield
d)
Subscript
72.

Name the part in red:


H2 + O2 -> H2O

a)

Coefficient

b)

Product

c)

Reactant

73.
What is the definition of a catalyst?
a)
Something that speeds up a rxn
b)
Something that slows a rxn
c)
Something that makes more products
d)
Something that makes more reactants
74.
This symbol indicates that a reaction is ____________
a)
reversible
b)
irreversible
75.

In an endothermic reaction, the products have

a)

more energy than the reactants

b)

less energy than the reactants

c)

the same energy as the reactants

d)

no energy

76.

In an exothermic reaction, the products have

a)

more energy than the reactants

b)

the same energy as the reactants

c)

less energy than the reactants

d)

no energy

77.

Which of the following is considered a CHEMICAL change?

a)

combining sodium and chlorine to form sodium chloride

b)

melting a solid iron to form liquid iron

c)

dissolving sodium chloride in water

d)

boiling water to produce water vapor

78.

When substances react, you expect to observe

a)

change in color

b)

a release of gas or precipitate

c)

release of heat or light in the products

d)

all of the above as possibilities

79.

In a chemical equation, the symbol (aq) indicates that the substance is:

a)

water

b)

dissolved in water

c)

an acid

d)

insoluble in water

80.

The chemical symbol of an element written over the arrow in a chemical equation signifies:

a)

a byproduct

b)

the formation of a gas

c)

a catalyst for the reaction

d)

an impurity

81.

Exothermic reactions occur when additional energy is _____ as the new products form.

a)

absorbed

b)

released

82.

Which of the following is used to indicate a precipitate has formed during a chemical reaction?

a)

(aq)

b)

(p)

c)

(s)

d)

(🌨)

83.

Which of the following is used to indicate that a substance is insoluble in water?

a)

(aq)

b)

(p)

c)

(s)

d)

(🌨)

84.

Imagine a reaction in which water vapor is formed. How would you indicate this?

a)

H2O(g)

b)

H2O(v)

c)

W.V.(g)

d)

H2O(aq)

85.

Information about energy written on the LEFT side of a chemical equation indicates that a reaction is:

a)

exothermic

b)

endothermic

86.

Select the reactant(s) of the following reaction:

"A solution of NH4OH will form when NH3 gas is mixed with H2O. "

a)

NH4OH only

b)

NH3 & H2O

c)

NH3 only

d)

H2O only

87.

What state of matter should follow the formula for Cu(NO3)2?

"Crystals of Ag and a blue solution of Cu(NO3)2 are formed when a piece of Cu metal is added to aqueous AgNO3."

a)

(s)

b)

(aq)

c)

(l)

d)

(sol)

88.
The number of atoms of  N (nitrogen) in 3N2O5 is
a)
5
b)
2
c)
6
d)
15
89.

What coefficient belongs on the line:

C4H6 + 3O2 ---------> ___CO2 + 3H2O

a)

3

b)

4

c)

6

d)

10

90.

What coefficient belongs on the line:

Mg + 2AgCl ------------> MgCl2 + ___Ag

a)

1

b)

2

c)

4

d)

6

91.

Which of the following reactions is balanced?

a)

2Na + Cl2-------> 2NaCl

b)

2Na + 2Cl2 ------> 2NaCl

c)

Na + 2Cl2 --------> NaCl

92.

What coefficient belongs on the line?

1N2 + 3H2 --> __NH3

a)

2

b)

1

c)

3

d)

5

93.

How many Hydrogen atoms are in 4H2O?

a)

6

b)

8

c)

2

d)

4

94.

What coefficient belongs on the line?

Mg + __HCl ---> MgCl2 + H2

a)

1

b)

2

c)

3

d)

4

95.

How many atoms of aluminum are on each side of the following equation:

4Al + 3O2 --> 2Al2 O3

a)

2

b)

6

c)

1

d)

4

96.
Is the following equation balanced or unbalanced?
Fe + S --> FeS
a)
balanced
b)
unbalanced
97.
Is this balanced?...
Al + O2 --> 2Al2O3
a)
Yes!
b)
NO!
98.

What coefficient belongs on the line?

P4 + 3O2 --> ___P2O3

a)

1

b)

2

c)

3

d)

4

99.

Which element has chemical properties most similar to calcium, Ca?

a)

Be

b)

K

c)

Ti

d)

Y

100.

Which element has chemical properties most similar to calcium, Ca?

a)

Be

b)

K

c)

Ti

d)

Y

101.

Nuclear pull on valence electrons is strongest __________.

a)

at the top of a group.

b)

in the middle of a group.

c)

at the bottom of a group.

102.

Nuclear pull on valence electrons is strongest ________ .

a)

on the left side of a period.

b)

in the middle of a period.

c)

on the right side of a period.

103.

As you move down a group, atomic radius increases because -

a)

more and more neutrons

b)

more and more protons

c)

more and more full energy levels

d)

more protons, so nuclear attraction is stronger

104.

Why do atoms get smaller as you move across a period (left to right)?

a)

the number of protons increases, so attraction to electrons increases

b)

the number of energy levels increases

c)

the number of electrons increases

d)

the atomic mass increases

105.

Which group has the smallest atomic radius?

a)

Alkali metals

b)

Halogens

c)

Noble Gases

d)

Transition metals

106.

Atomic radius is smallest:

a)

B

b)

F

c)

O

d)

Li

107.

Which atom would be the largest?

a)

Li

b)

Na

c)

K

d)

Rb

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