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Physical Science Final

Total questions: 40

Worksheet time: 40mins

Name
Class
Date
1.

When dissolved in water, all acids will

a)

form hydroxide ions

b)

have a negative charge

c)

conduct electricity

d)

turn blue

2.

A solution that is mildly acidic would have a pH of approximately

a)

2

b)

4

c)

6

d)

8

3.

The label on a bottle indicates that the substance inside has a pH of 13. This tells you that the substance is

a)

neutral

b)

strongly acidic

c)

mildly basic

d)

strongly basic

4.

A base forms which ions in solution?

a)

oxygen

b)

hydroxide

c)

hydronium

d)

hydrogen

5.

Which solution is the most acidic?

a)

apple juice pH=3

b)

pure water pH=7

c)

hand soap solution pH=10

d)

drain cleaner solution pH= 14

6.

When a solution of an acid reacts with a solution of a base, hydrogen ions react with hydroxide ions to form

a)

salt

b)

a stronger acid

c)

a weaker base

d)

water

7.

Which of the following is a basic solution?

a)

household ammonia

b)

diluted vinegar

c)

pure water

d)

HCL dissolved in water

8.

Which phrase is NOT true about acids?

a)

they taste sour

b)

they feel slippery

c)

turns blue litmus paper red

d)

form H+ ions in solution

9.

The name DINITROGEN TETROXIDE tells you that this compound contains

a)

2 N atoms and 2 O atoms

b)

4 N atoms and 2 O atoms

c)

2 N atoms and 4 O atoms

d)

4 N atoms and 4 O atoms

10.

The name for the compound with the formula AL2O3 would be written as

a)

aluminum oxide

b)

alum oxide

c)

alum oxygen

d)

aluminum oxygen

11.

An ionic bond is a bond that forms between

a)

ions with opposite charges

b)

atoms with neutral charges

c)

one atom's nucleus and another atom's electrons

d)

the electrons of two different atoms

12.

In which type of bond do atoms share electrons?

a)

covalent bonds

b)

metallic bonds

c)

ionic bonds

d)

polyatomic bonds

13.

A release of energy is a sign that

a)

a chemical change is taking place

b)

a physical change has just occured

c)

oxygen is present

d)

organic chemicals are present

14.

All of the following factors may speed up a chemical reaction EXCEPT

a)

smaller surface area

b)

higher pressure

c)

higher temperature

d)

presence of a catalyst

15.

The substance that is formed in a chemical reaction is called the

a)

polymer

b)

reactant

c)

radical

d)

product

16.

In a balanced chemical equation, the mass of the reactants is equal to the

a)

atoms in a molecule

b)

atomic mass of the elements

c)

volume of the reactants

d)

mass of the products

17.

What coefficient is missing in C2H4 + (?) O2 --> 2CO2 + 2H2O

a)

2

b)

3

c)

4

d)

5

18.

Which of the following represents a double displacement reaction between sodium chloride and and silver flouride?

a)

NaCl + AgF -> NaAgF + Cl2

b)

NaCl + AgF -> NaF + AgCl

c)

NaCl + AgF -> AG + NaClF

d)

NaCl + AgF -> NaF + Cl2 + Ag

19.

At higher temperatures, food cooks faster because particles of food

a)

take up less space

b)

increase in number

c)

collide more often

d)

come into contact with water

20.

What happens in a chemical reaction?

a)

atoms are destroyed

b)

atoms are created

c)

atoms are heated and cooled

d)

atoms are rearranged

21.

When you go bowling and the ball hits the first pin, which hits the 2 pins behind it, which then hit the pins behind them. This demonstrates

a)

a chain reaction

b)

the theory of relativity

c)

fusion

d)

alpha decay

22.

A tossed salad with tomatoes, cucumbers, apples and croutons is an example of a

a)

heterogeneous mixture

b)

homogeneous mixture

c)

solution

d)

solvent

23.

Sterling silver is 92.5% silver and 7.5% other metals like copper and zinc, which makes it

a)

a suspension

b)

an emulsion

c)

an alloy

d)

a colloid

24.

Because many substances dissolve in water, water is referred to as the

a)

heterogeneous solvent

b)

homogenous solvent

c)

universal solvent

d)

universal solute

25.

Loose sugar dissolves much faster than a sugar cube because loose sugar ____________.

a)

has a greater surface area

b)

has less kinetic energy

c)

has a higher temperature

d)

has a greater surface tension

26.

When making lemonade from a mix, the water is the _______ and the mixture all together is the _______.

a)

solute, solution

b)

solute, solvent

c)

solvent, solution

d)

solution, solvent

27.
Which problem is balanced?
a)
PbO2 + 2H2
b)
SO2 + H20 --> H2SO4
c)
2Na + 2H2O --> 2NaOH + H2
28.
Is the equation balanced?: 2H2O + O2 --> 4MgO + 3Fe
a)
Yes
b)
No
29.
What is the little number after an element in a chemical equation called.
Example: H2
a)
Coefficient 
b)
Subscript
c)
Atom
d)
Equation
30.
What is the arrow in a chemical equation...
H2 + O --> H2O
a)
Reactants
b)
Products 
c)
Produces
d)
Chemical Equation 
31.
Balance this equation
_Zn+_HCl-->_ZnCl+_H2
a)
1,1,2,1
b)
1,1,1,2
c)
1,2,1,1
d)
2,1,1,1
32.
Balance this equation.
_Mg + _Cl--> _MgCl2
a)
1, 2,1
b)
already balanced
c)
2,1,1
d)
1,1,2
33.
Is this balanced?...
Fe + S --> FeS
a)
YES!
b)
NO!
34.
Balance this equation-
__P+ __O--> __P2O3
a)
it is already balanced
b)
2, 1, 3
c)
1, 2, 3
d)
1, 3, 2
35.
Balance this equation.
_Mg + _Cl--> _MgCl2
a)
1, 2,1
b)
already balanced
c)
2,1,1
d)
1,1,2
36.
Which side of a chemical equation is the product side?
a)
Left (before the arrow)
b)
Right (after the arrow)
37.
Which side of a chemical equation is the reactant side?
a)
Left (before the arrow)
b)
Right (after the arrow)
38.
How many Elements are in the compound C2H8O ?
a)
2
b)
1
c)
3
d)
0
39.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
40.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information