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Science 8 Year Review--Physical Science

Total questions: 55

Worksheet time: 37mins

Name
Class
Date
1.

The smallest particle of an element.

a)

Element

b)

Molecule

c)

Atom

2.

A combination of two or more atoms

a)

Period

b)

Molecule

c)

Atom

d)

Family

3.

A physical model that depicts the atom as a small positively charged nucleus with electrons in orbit at different levels.

a)

Covalent bond

b)

Ionic bond

c)

Bohr Model

d)

Electron dot diagram

4.

A diagram that shows the bonding between atoms of a molecule and the lone pair of electrons that may exists in the molecule

a)

Hydrogen bond

b)

Bohr Model

c)

Electron dot diagram

d)

Element

5.

Elements in the same vertical column of the periodic table; also called group

a)

Family

b)

Atom

c)

Element

d)

Metals

6.

A horizontal row of elements in the periodic table

a)

Molecule

b)

Period

c)

Family

d)

Atom

7.

What is one way Neutrons are different from electrons?

a)

they both are negative

b)

neutrons have no charge, while electrons have a negative charge

c)

Both are in the nucleus( center of atom)

d)

Electrons are inside nucleus and neutrons are outside the nucleus.

8.

What is the atomic number?

a)

35

b)

18

c)

17

d)

52

9.

How many protons and electrons does this element have?

a)

35

b)

18

c)

17

d)

52

10.

How many neutrons does Chlorine have?

a)

18

b)

17

c)

35

d)

52

11.

What is the atomic mass of Arsenic?

a)

33

b)

107

c)

75

12.

What would Au (Gold) be categorized as on the periodic table?

a)

Nonmetal

b)

Metal

c)

Transitional metal

d)

Noble gas

13.
In which group does this atom belong?
a)
1
b)
3
c)
13
d)
11
14.
How many energy levels does an atom of Chlorine have?
a)
2
b)
3
c)
4
d)
7
15.
How many valence electrons does an atom of oxygen have?
a)
2
b)
5
c)
6
d)
16
16.

What happens to the atomic numbers as you move from left to right on the periodic table?

a)

Increase

b)

Decrease

c)

Stay the same

d)

Nothing

17.

Two elements that have similar physical and chemical properties are most likely in the same...

a)

period

b)

row

c)

group

18.

In which group would an element that is very reactive most likely be located?

a)

1

b)

5

c)

15

d)

18

19.

Which of the following elements is most likely a metal?

a)

W

b)

X

c)

Y

d)

Z

20.

Which of the following elements is most likely a poor conductor of electricity?

a)

Beryllium (Be)

b)

Gold (Au)

c)

Phosphorus (P)

d)

Copper (Cu)

21.

What is the atomic mass of an element with 16 protons, 13 neutrons, and 16 electrons?

a)

13 amu

b)

16 amu

c)

29 amu

d)

45 amu

22.
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. 
23.
Ionization energy is...
a)
the energy required to add an electron to a specific atom
b)
how much energy it takes to remove an electron from an atom
c)
the energy required to shield the outer electrons from the nucleus
d)
a measure of the ability of an atom to attract electrons
24.
Atomic radius generally increases as we move __________.  
a)
down a group and from right to left across a period 
b)
up a group and from left to right across a period 
c)
down a group and from left to right across a period 
d)
up a group and from right to left across a period 
25.

As you move from left to right on the periodic table, the number of valence electrons.......

a)

Increases

b)

Decreases

c)

Remains the same

26.

As you move down a group on the periodic table, the number of valence electrons....

a)

Increases

b)

Decreases

c)

Remains the same

27.

Which of the following is true of atomic radius?

a)

The radius is mainly due to how large an atom's nucleus is.

b)

The radius is mainly due to the size of the electron cloud.

c)

The atomic radius is a way we measure the mass of an atom.

d)

Neutrons account for the majority of an atom's radius.

28.
Matter is anything that has _______ and takes up space. 
a)
weight
b)
mass 
c)
the ability to float
29.
Which state of matter has a volume that can change?
a)
solid
b)
gas
c)
liquid
30.
__________ is the amount of space something takes up. 
a)
matter
b)
volume
c)
weight
d)
density
31.
________ is a measure of how packed the molecules of a substance are.
a)
volume
b)
density
c)
weight
32.
What is the formula for calculating density?
a)
Mass ∗ Volume
b)
Volume ∗ Mass
c)
Mass ÷ Volume
d)
Volume ÷ Mass
33.
If you had a sealed bottle of water, how would the mass of the water bottle change after a 5 day period?
a)
Mass would increase. 
b)
Mass would stay the same. 
c)
Mass would decrease. 
d)
None of the above.
34.
What is the density of water?
a)
1 mL
b)
1 gram
c)
1 g/cm3
d)
All of the above
35.
Which statement is true?
a)
Oil is the most dense substance.
b)
Corn syrup is less dense than water.
c)
Oil is less dense than water.
d)
Oil and corn syrup have the same density but different masses.
36.
5 grams of salt was mixed with 50 mL of water to form a solution. In the solution, the water was which of the following?
a)
Solvent
b)
Saturate
c)
Solute
d)
Transparent
37.
A change that alters the physical properties of a substance without changing its composition.
a)
Physical Change
b)
Chemical Change
38.
Water freezing into ice is an example of a...
a)
Physical Change
b)
Chemical Change
39.
Any change in the state of matter of a substance is a...
a)
Physical Change
b)
Chemical Change
40.
A change in matter that forms one or more new substances with new chemical properties is a/an...
a)
Physical Change
b)
Chemical Change
41.
Which of the following indicates a chemical change?
a)
Change in state of matter
b)
Temperature change
c)
Change in size 
d)
Change in shape
42.
A solid substance that forms when 2 liquid solutions are combined?
a)
Sublimation
b)
Precipitate
c)
Condensation
d)
Freezing
43.
Which of the following DOES NOT indicate a chemical change/reaction is occurring?
a)
Color Change
b)
Formation of a Precipitate
c)
Formation of gas/bubbles
d)
State of matter change
44.

Chemical Equation

a)

A representation of a chemical reaction

b)

the starting materials in a chemical reaction

c)

the new substances that are formed in a chemical reaction

d)

tells how many atoms, molecules, or formula units take part in a reaction

45.

The Law of Conservation of Matter

a)

tells how many atoms of an element are contained in one molecule or formula unit.

b)

the starting materials in a chemical reaction

c)

the new substances that are formed in a chemical reaction

d)

A law stating that atoms are not created or destroyed during a chemical reaction.

46.

Is the equation balanced?: 2H2O + O2 --> 4MgO + 3Fe

a)

yes

b)

no

47.

Balance this equation

_Al +_HCl --> _H2 +_AlCl3

a)

2,6,3,2

b)

it's already balanced

c)

4,12,3,4

d)

2,1,4,5

48.

The coefficient in 3H2O is

a)

6

b)

5

c)

2

d)

3

49.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
50.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
51.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
52.
What is the left part of a chemical equation called?
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
53.
What is the right part of a chemical equation called...
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
54.
What is the total number of atoms present in 5Na3PO4
a)
5
b)
40
c)
55
d)
8
55.
What is the little number after an element in a chemical equation called.
Example: H2
a)
Coefficient 
b)
Subscript
c)
Atom
d)
Equation

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