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Physical Science Sem.2 Final 2023

Total questions: 73

Worksheet time: 2hrs 44mins

Name
Class
Date
1.

Check all examples that are heterogeneous mixtures.

a)

Saltwater

b)

Pepperoni pizza

c)

Chopped salad

d)

Air

2.

Check all examples that are homogeneous mixtures.

a)

Milk

b)

Tea

c)

Chicken noodle soup

d)

Air

3.

Which of these is not an element?

a)

Water (H2O)

b)

Copper (Cu)

c)

Carbon (C)

d)

Iron (Fe)

4.

What is the smallest unit of an element that retains the chemical properties of that element?

a)

Electron

b)

Neutron

c)

Molecule

d)

Atom

5.

Which of these samples shown best represents an mixture?

a)

A

b)

B

c)

C

d)

D

6.

Which of these samples shown best represents an element?

a)

A

b)

B

c)

C

d)

D

7.

Which of these samples shown best represents a compound?

a)

A

b)

B

c)

C

d)

D

8.
Question Image

Match the following

a)

Volume of solid

1.

definite

b)

 Movement of Solid

2.

vibrates

c)

Shape of solid

3.

definite shape

9.
Question Image

Match the following

a)

Shape of Liquid

1.

same as container

b)

Volume of Liquid

2.

definite

c)

Movement of Liquid

3.

slow

10.
Question Image

Match the following

a)

Shape of gas

1.

same as container

b)

volume of gas

2.

not definite

c)

movement of gas

3.

fast

11.

What is boiling point (write the number)?

(a)  

12.
Question Image

Match the letter in the picture with the word

a)

A

1.

all solid

b)

B

2.

melting/

freezing

c)

C

3.

all liquid

d)

D

4.

boiling/

condensing

e)

E

5.

all gas

13.
Question Image

Look at the picture and match the following:

a)

Density 1.25g/ml

1.

C

b)

Density

0.89 g/ml

2.

A

c)

Density

1.05g/ml

3.

B

14.

Which of the following belongs in the heterogeneous mixture group:

a)

tea

b)

hot fudge sundae

c)

milk

15.

Identify the parts of a mixture made from 1cm of salt mixed with 1000 ML of water.

a)

salt

1.

solute

b)

water

2.

solvent

c)

saltwater

3.

solution

16.

The vertical (up and down) columns in the Periodic Table are called

a)

groups

b)

towers

c)

periods

d)

atomic numbers

17.

Which group of the periodic table is composed of inert (not reactive) gases?

answer choices

a)

alkali metals

b)

alkaline earth metals

c)

halogens

d)

noble gases

18.
The horizontal row on the periodic table is called a
a)
group
b)
family
c)
period
d)
atomic number
19.
What does the 1.00794 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
20.

Elements in the same group have : (2 correct answers)

a)

Similar chemical properties

b)

Similar names

c)

Same number of outer (valence) electrons)

d)

The same number of protons

21.
Which is an alkali metal?
a)
Magnesium
b)
Iron
c)
Sodium
d)
Europium
22.
Which is a halogen?
a)
Helium
b)
Chlorine
c)
Oxygen
d)
Neptune
23.

The blue elements (left side) are called 

a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
24.

The yellow elements (right side) are called 

a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
25.
The atoms along the staircase are called 
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
26.
If my charge becomes 2+ what does that say about me?
a)
I am stealing 2 electrons
b)
I am losing 2 electrons
c)
I am in period 2
d)
I have an atomic # of 2
27.
What formula results when Ca+2  and  Br- ions bond?
a)
Ca2Br2
b)
CaBr
c)
Ca(br)2
d)
CaBr2
28.

Losing electrons makes an atom more

a)

of a loser

b)

positively charged

c)

forgetful

d)

than enough

29.

Which two elements would NOT form an ionic bond?

a)

calcium and lithium

b)

calcium and oxygen

c)

lithium and oxygen

d)

calcium and carbon

30.
How do the following two elements bond together?
Cr3+  O2-         
a)
CrO
b)
Cr3O2
c)
Cr2O3
d)
CrO3
31.
What is the correct name for MgI₂?
a)
Manganese IV iodide
b)
Manganese diiodide
c)
Magnesium iodide
d)
Magnesium diiodide
32.
What part of an atom is involved in chemical bonding?
a)
protons
b)
neutrons
c)
electrons
d)
nucleus
33.
How many valence electrons does nitrogen have?
a)
3
b)

2

c)
5
d)
1
34.
A ________ is a model of an atom in which each dot represents a valence electron.
a)
Valence electron
b)
Electron dot diagram/Lewis dot structure
c)
Lewis bond structure
35.
Where are the non-metals located on the periodic table?
a)
All over
b)
On the left side of the "staircase"
c)
On the right side of the "staircase"
36.
A covalent bond involves a __________ of electrons.
a)
sharing
b)
borrowing
c)
exchanging
d)
switching
37.
Compounds made from only nonmetals are _________________ compounds.
a)
ionic
b)
covalent
c)
metallic
d)
chemical
38.
What is the name of N2O3
a)
Nitrogen trioxide
b)
Dinitrogen oxide
c)
Dinitrogen trioxide
d)
Nitrogen oxide
39.
What is the chemical formula for Tetrasulfur pentoxide?
a)
SO
b)
S4O
c)
S4O5
d)
S5O4
40.
What is the chemical formula for Nitrogen triiodide?
a)
NI
b)
N3I
c)
NI3
d)
None of these
41.
What is the name of CO
a)
Carbon oxide
b)
Carbon dioxide
c)
Carbon monoxide
d)
Carbon II oxide
42.

Identify the reaction type:

C2H6 + O2 --> CO2 + H2O

a)

Double displacement

b)

Synthesis

c)

Acid base

d)

Combustion

43.

Identify the reaction type for the following equation:

K + F2 --> KF

a)

Double displacement

b)

Single Replacement

c)

Synthesis

d)

Decomposition

44.

Identify the type of reaction:

ZnCl2 + Mg --> Zn + MgCl2

a)

Precipitate

b)

Single Replacement

c)

Double Displacement

d)

Decomposition

45.

Identify the reaction type:

NaCl + KOH --> KCl + NaOH

a)

Double displacement

b)

Combustion

c)

Redox

d)

Precipitate

46.

Identify the reaction type:

H2O2 --> H2O + O2

a)

Decomposition

b)

Synthesis

c)

Combustion

d)

Acid Base

47.

What are reactants?

a)

The chemicals that start the reaction.

b)

The chemicals that the reaction produced.

c)

The chemicals that are on the right side of the arrow.

48.

What are products?

a)

The chemicals that start the reaction.

b)

The chemicals that the reaction produced.

c)

The chemicals that are on the left side of the arrow.

49.

What is the number before a chemical formula called?

Example: 2H2 + O2 ---> 2H2O

a)

Coefficient

b)

Atom

c)

Subscript

d)

Equation

50.

What is the total number of atoms present in 5Na3PO4?

a)

5

b)

55

c)

40

d)

8

51.
How many HCl molecules do you need to balance this equation? 
Mg +  __HCl --->  MgCl2 + H2
a)
1
b)
2
c)
3
d)
4
52.

What coefficients are needed to balance the equation?

___Al + ___ O2 ---> 2Al2O3

a)

3,2

b)

3,4

c)

4 , 3

d)

4,2

53.
Kool-Aid - Powder, sugar, and water
Identify the solvent 
a)
water
b)
powder
c)
sugar
d)
powder and sugar
54.
What does it mean to dilute a solution?
a)
lower the concentration of solute per solvent
b)
increase the concentration of solute per solvent
55.

A mixture with more solute dissolved in the solvent than is usually soluble is called:

a)

concentrated

b)

supersaturated

c)

saturated

d)

unsaturated

56.

When you have added as much solute as can dissolve in the solvent, the solution is called:

a)

concentrated

b)

supersaturated

c)

saturated

d)

unsaturated

57.

The following substances can NOT conduct electricity in water:

a)

Soluble ionic compounds

b)

Acids

c)

Bases

d)

Covalent Compounds

58.

In general, how could you increase the solubility of a solid in a liquid?

a)

Increase the pressure.

b)

Decrease the pressure.

c)

Increase the temperature.

d)

Decrease the temperature.

59.

I am an Alkaline Earth Metal in Period 6. Who am I?

a)

Tungsten

b)

Calcium

c)

Barium

d)

Caesium

60.

I have 1 more proton than lead and am found in Pepto Bismo.

a)

arsenic

b)

thallium

c)

bismuth

d)

xenon

61.

Period 4 and 1 valence electron. My symbol does not match my name

a)

Potassium

b)

Lithium

c)

Sodium

d)

Calcium

62.

The only metalloid in period 3

a)

Silicon

b)

Boron

c)

Germanium

d)

Arsenic

63.

I am the element with five valence electron with the second heaviest atomic mass in my group. I also glow very bright when exposed to oxygen.

a)

phosphorus

b)

oxygen

c)

beryllium

d)

rubidium

64.

Select the correct order of waves on the EM Spectrum from low to high energy

a)

Radio, Micro, Infra, Visible, Ultra, X-ray, Gamma

b)

Gamma, X-ray, Ultra, Vis, Infra, Micro, Radio

c)

Vis, Micro, Infra, Ultra, X-ray, Gamma, Radio

d)

Micro, Radio, Vis, Infra, Ultra, X-ray, Gamma

65.

How are Electromagnetic waves different from Mechanical waves?

a)

EM waves have very short wavelengths

b)

EM waves transmit energy instead of matter

c)

EM waves can travel through the vacuum of space (without particles)

d)

EM waves can change direction by reflection

66.
Which wave has the largest wavelength?
a)
A
b)
B
c)
C
d)
None (same wavelength)
67.

Which letter indicates X-rays?

a)

A.

b)

B.

c)

C.

d)

D.

68.

Which letter indicates infrared rays?

a)

A.

b)

B.

c)

C.

d)

D.

69.

Which of the following occurs as a light wave bends when it passes from on medium to another?

a)

constructive interference

b)

refraction

c)

reflection

d)

destructive interference

70.
What property of the wave is represented by the letter "B"?
a)
amplitude
b)
crest
c)
trough
d)
wavelength
71.
What do all waves carry?
a)
energy only
b)
matter only
c)
energy and matter
d)
neither
72.
The wave crest is represented by which letter?
a)
A
b)
B
c)
C
d)
E
73.
The rest/line of origin of a wave is represented by which letter?
a)
A
b)
C
c)
D
d)
E

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