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Chemistry Semester 1 final

Total questions: 50

Worksheet time: 49mins

Name
Class
Date
1.
Horseplay, jokes, and pranks are appropriate in the science classroom at any time.
a)
True
b)
False
2.
I must follow all instructions, written and verbal, about the laboratory procedures given by the teacher.
a)
True
b)
False
3.

What should be done with long hair before starting a lab?

a)

Do nothing, let it hang freely

b)

Hold it back with your hand

c)

Tie it back out of the way

d)

Use a hat to hold it back

4.

What is the safest way to smell a substance during a lab?

a)

Lean over and smell it directly

b)

Put it on your hand and smell it

c)

Waft the air towards your face

d)

Lift the substance to your nose

5.

Why are food and drink not permitted during an experiment?

a)

They could make your lab partner hungry

b)

They could attract ants and other insects

c)

They could make your instructor hungry

d)

They could contaminate the experiment

6.

What should you do with your station after completing the lab?

a)

Clean it up properly

b)

Leave it for someone else

c)

Throw everything away

d)

Push everything to one side

7.
There are four cups of hot cocoa. The cup sizes are shown. The temperature of the cocoa in each cup is 25 degrees celsius. Which cup has the MOST thermal energy?
a)
Large cup (Trenta)
b)
Small cup (Tall)
c)
Venti
d)
All three are the same temperature so they have same thermal energy
8.
What would be the effect on the particles if more heat is supplied to the system?
a)
They would slow down
b)
They would stop moving
c)
They would speed up
d)
There would be no effect
9.
A high specific heat means...
a)
It heats up quickly with energy added
b)
It requires more energy to change temperature
10.
What type of reaction occurs in a hand warmer
a)
exothermic
b)
endothermic
11.
Exothermic reactions...
a)
Absorb energy
b)
Release energy
c)
Release Color
d)
Absorb Color
12.
In an endothermic reaction, heat is ...
a)
taken in or absorbed
b)
given out or released 
13.

_____ reactions usually feel hot!

a)

endothermic

b)

exothermic

14.

What are the columns referred to on the Periodic Table of Elements?

a)

Families or groups

b)

Periods

15.

What are the rows referred to on the Periodic Table of Elements?

a)

Families or groups

b)

Periods

16.

Atomic Mass equals the combined number of

a)

Protons and Electrons

b)

Electrons and Neutrons

c)

Protons and Neutrons

17.

The number of valence electrons ________ by 1 as you move across the period.

a)

increases

b)

decreases

18.

Valence electrons are

a)

the electrons in the outer most energy level

b)

all the electrons in the atom

19.

What is the name of group number 1?

a)

halogens

b)

noble gases

c)

alkali metals

d)

alkaline earth metals

20.

What is the name of group number 2?

a)

transition metals

b)

halogens

c)

metaloids

d)

alkaline earth metals

21.

What group number are the halogens found?

a)

18 (8A)

b)

1

c)

2

d)

17 (7A)

22.

Periodic law states that the elements are arranged according to their atomic ________ so that elements with similar chemical properties are in the same ________ and properties repeat periodically.

a)

numbers, rows

b)

masses, rows

c)

masses, column

d)

numbers, column

23.

Metals (select all that apply)

a)

are found on the right side of the periodic table.

b)

are found on the left side of the periodic table.

c)

are good conductors of heat and electricity.

d)

are brittle.

e)

are malleable and ductile.

24.

Which element is found in group 2, period 6?

a)

Oxygen (O)

b)

Barium (Ba)

c)

Selenium (Se)

d)

Carbon (C)

25.

Which halogen is found in period 4?

a)

Krypton (Kr)

b)

Xenon (Xe)

c)

Bromine (Br)

d)

Iodine (I)

26.

Which element has a larger radius?

a)

Oxygen (O)

b)

Sulfur (S)

c)

Tellurium (Te)

d)

Polonium (Po)

27.

Which element has the highest electronegativity?

a)

Fluorine (F)

b)

Iodine (I)

c)

Bromine (Br)

d)

Chlorine (Cl)

28.
As you move down the periodic table atoms get bigger.  This is because ____________.
a)
The atoms have more mass.
b)
The atoms have more protons.
c)
The atoms have more energy levels
d)
The atoms have more nuetrons
29.
Electronegativity is...
a)
how good an atom is at attracting electrons
b)
the ability of an atom to lose electrons
c)
the energy required to remove an electron from a specific atom
d)
how easy it is to make friends. 
30.
An atom becomes _________ when it gains electrons.
a)
Positive
b)
Negative
c)
Neutral
d)
Invinsible
31.
An atom becomes _______ when it loses electrons.
a)
Positive
b)
Negative
c)
Neutral
d)
Invinsible
32.
Cations are...
a)
Positive
b)
Negative
c)
Neutral
d)
Purring
33.
Anions are...
a)
Positive
b)
Negative
c)
Neutral
d)
Crying
34.

Why are ions formed?

a)

To make our lives difficult

b)

Because atoms want to be stable with 8 valence electrons

c)

Because atoms have the same number of protons and electrons

d)

Because atoms gained neutrons

35.

An atom with 2 protons, 3 neutrons, and 4 electrons has a charge of ____.

a)

+2

b)

-2

c)

+3

d)

0

36.

A Bromine ion gains 1 electron, which of the following is the correct symbol for a Bromine ion?

a)

Br-1

b)

Br+1

c)

Br+7

d)

Br-7

37.
What is the charge of an atom that has lost one electron?
a)
-1
b)
-2
c)
+1
d)
+2
38.

How many electrons would a Nitrogen ion gain/lose? If it has 5 valence electrons.

a)

lose 5

b)

gain 5

c)

lose 3

d)

gain 3

39.

What is the ion formed from Sulfur? If it has 6 valence electrons.

a)

S+2

b)

S-2

c)

S+6

d)

S-6

40.

An ionic bond will happen between

a)

metal and nonmetal

b)

nonmetal and nonmetal

c)

metal and metal

41.

What part of the atom does bonding involve?

a)

protons

b)

neutrons

c)

all electrons

d)

valence electrons

42.

How many electrons fit in the first energy level?

a)

2

b)

4

c)

8

43.
What is the name of this element?
a)
Helium
b)
Hydrogen
c)
Argon
d)
Silver
44.

What element is represented in this Bohr Model?

a)

Carbon

b)

Hydrogen

c)

Aluminum

d)

Lithium

45.

Matter is anything that.....

a)

Has mass and takes up space

b)

Has mass and is visible

c)

Takes up space and has energy

d)

Has energy and is visible

46.
The atomic number tells you what?
a)
number of electrons
b)
number of protons
c)
number of neutrons
d)
both electrons and protons in an atom.
47.
Which element is not a metal?
a)
H
b)
Re
c)
Al
d)
B
48.
The atoms along the staircase are called 
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
49.
Which is a halogen?
a)
Helium
b)
Chlorine
c)
Oxygen
d)
Neptune
50.

The particles in an atom that are neutral (have no charge) are called __________.

a)

negatrons

b)

electrons

c)

neutrons

d)

protons

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