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Chemistry Final 2025

Total questions: 50

Worksheet time: 2hrs 50mins

Name
Class
Date
1.

The substance being dissolved in a solution is the?

a)

solution

b)

solute

c)

solvent

d)

mixture

2.

The substance in which a solute is dissolved is a?

a)

solution

b)

solvent

c)

alloy

d)

mixture

3.
If I dissolve sugar in water, what is the solute?
a)
Water
b)
Hydrogen
c)
Sugar
d)
Carbon
4.

If I dissolve carbon dioxide in water, what is the solvent?

a)

Carbon Dioxide

b)

There is no solvent

c)

Oxygen

d)

Water

5.

If I dissolve salt in water, what is the solvent?

a)

salt

b)

water

c)

salt & water

d)

none of the above

6.

At 80'C, KBr's solubility is:

a)

100g

b)

90g

c)

80g

d)

0g

7.

Identify how many grams of KNO3 is required to make a saturated solution at 40'C.

a)

50 g

b)

45 g

c)

60 g

d)

33 g

8.

How much C12H22O11 solute is saturated at 40 degrees?

a)

240

b)

220

c)

230

d)

250

9.

A covalent bond exists between

a)

2 metals

b)

1 metal and 1 nonmetal

c)

2 nonmetals

d)

Any 2 elements

10.
What is the formula for Tricarbon Octahydride?
a)
Ca3O
b)
C2H8
c)
C3H8
d)
Ca3H8
11.
Is carbon considered a metal or a non-metal?
a)
metal
b)
nonmetal
c)
other
12.
What is a double bond?
a)
a bond between two atoms
b)
one pair of electrons shared between two atoms
c)
two pairs of electrons shared between two atoms
d)
James Bond's brother
13.

hexaboron monosilicide

a)

B6Si

b)

BSi

c)

BSi6

d)

B6Si6

14.

What coefficient should be used to make the following equation balanced?

N2+O2--> __?__NO

a)

1

b)

2

c)

3

d)

4

15.

Balance this equation. _CF4 + _Br2 → _CBr4 + _F2

a)

3,1,2,1

b)

1,2,1,2

c)

2,2,2,2

16.

According to the Law of Conservation of Mass (Matter), Matter cannot be ​ (a)   or ​ (b)   , it can only be ​ (c)   . This means however many atoms of an element we have before a reaction must be ​ (d)   to the number after a reaction.

Choose from the below words
created
destroyed
changed
equal
17.
What is the total number of atoms present in 5Na3PO4
a)
5
b)
40
c)
55
d)
8
18.

Which type of reaction is:

H2 + O2 → H2O

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

19.

Which type of reaction is:

NiCl2 → Ni + Cl2

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

20.

Which type of reaction is:

MgI2 + Br2 → MgBr2 + I

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

21.

Which type of reaction is:

NaCl + AgNO3 → NaNO3 + AgCl

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

22.

What type of reaction occurs in a hand warmer?

a)

Exothermic

b)

Endothermic

23.
What are the states of matter?
a)
solid, liquid, and juice
b)
solid and liquid
c)
solid and gas
d)
solid, liquid, and gas
24.
How many protons does Carbon have?
a)
3
b)
4
c)
5
d)
6
25.
Negatively charged part of an atom located in levels outside the nucleus
a)
Proton
b)
Neutron
c)
Electron
d)
Neutron
26.
Burning a piece of paper 
a)
Chemical Change 
b)
Physical Change 
27.
Mixing salt and water 
a)
Chemical Change 
b)
Physical Change 
28.
What is the symbol for chlorine?
a)
C
b)
Ch
c)
Ce
d)
Cl
29.
Balance this equation:
P4+O2  -->  P2O3
a)

3 P4+ O2 --> 2 P2O3

b)

 P4+ O2 --> 2 P2O3

c)

 P4+ 3 O2 --> 2 P2O3

d)

 P4+ 2 O2 --> 3 P2O3

30.
A saturated solution is one that....
a)
contains the maximum amount of dissolved solute.
b)
contains less solute than a saturated solution.
c)
contains more solute than a saturated solution.
d)
is the amount of a substance required to form a saturated solution.
31.

What is the atomic number for Silicon(Si) ?

a)

10

b)

14

c)

16

d)

17

32.

Is Silicon a metal, nonmetal, or metalloid?

a)

Metal

b)

Nonmetal

c)

Metalliod

33.

What is the Symbol of Copper?

a)

Cs

b)

Co

c)

Cr

d)

Cu

34.

Which element is in period 1 group 18?

a)

Helium

b)

Hydrogen

c)

Neon

d)

Lead

35.

Covalent bonds form when

a)

the electronegativity difference between two atoms is very large.

b)

electrons are completely transferred between two atoms.

c)

pairs of electrons are shared between two atoms.

d)

ions are held together by opposite charges.

36.
Anything that takes up space and has mass is known as _______________.
a)
Matter
b)
Molecules
c)
Compounds
d)
Stuff
37.
What does the ATOMIC MASS tell us about an atom?
a)
Protons + Neutrons
b)
Protons + Electrons
c)
Neutrons + Electrons
38.
The image shows the periodic grid for POTASSIUM. How many PROTONS are found in a potassium atom?
a)
19
b)
39
c)
20
d)
Impossible to tell
39.

How many protons does this isotope of titanium have?

a)

48

b)

22

c)

26

d)

70

40.
What does the symbol -10e represent
a)
alpha
b)
beta
c)
gamma
d)
the zero element
41.
What is the symbol for an alpha particle?
a)
42He
b)
0-1e
c)
0+1 e
d)
10n
42.

How many neutrons does this isotope of titanium have?

a)

48

b)

22

c)

26

d)

70

43.

What is radioactivity?

a)

An unstable atom releases energy to become stable

b)

A stable atom gains energy and becomes unstable

c)

When a bomb goes off.

d)

Negatively charged particles are emitted from the nucleus

44.

What number belongs in the blank?

a)

9

b)

2

c)

17

d)

0

45.

Which type of radioactivity is in the form of waves, rather than particles?

a)

Alpha

b)

Beta

c)

Gamma

d)

Nuclear

46.

Which radioactive particle has this symbol?

a)

Alpha

b)

Beta

c)

Gamma

d)

Nuclear

47.

What particle is released when an unstable isotope undergoes alpha decay?

a)

a helium nucleus

b)

an electron

c)

a photon of light

d)

a neutron

48.

An alpha particle is made up of

a)

2 protons and 4 neutrons

b)

1 proton and 1 neutron

c)

2 protons and 2 neutrons

d)

4 protons and 2 neutrons

49.

Gamma rays damage human cells/tissue.

a)

True

b)

False

50.
Name the type of radioactive particle that can be stopped by a sheet of paper.
a)
alpha
b)
beta
c)
gamma
d)
lambda

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