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Benchmark #1 Review

Total questions: 41

Worksheet time: 49mins

Name
Class
Date
1.
Look at this image.  Which object has the LOWEST density in water? How? 
a)
The Ping Pong Ball because it floats to the top 
b)
The bolt because it has sunk to the bottom
c)
The soda cap because it is not just full of air like the Ping Pong ball
2.
An irregularly shaped piece of gold was lowered into a graduated cylinder holding a volume of water equal to 17 ml. The height of the water rose to 20 ml. If the mass of the gold was 27 g, what was its density?
a)
9 g/mL
b)
10.5 g/mL
c)
6.5 g/mL
d)
8 g/mL
3.

The amount of water displaced is the same as the volume of the object. What is the VOLUME of the object?

a)
40 mL
b)
65 mL
c)
20 mL
d)
25 mL
4.
What is the formula for density?
a)
density = mass x volume
b)
density = mass / volume
c)
density = mass + volume
d)
density = mass - volume
5.

Which box has a higher density?

a)

A

b)

B

c)

They are the same

6.

The number of protons in the nucleus of an atom is called the --

a)

atom

b)

proton

c)

atomic mass number

d)

atomic number

7.

A subatomic particle with a positive charge is called --

a)

a proton

b)

a neutron

c)

an electron

d)

a nucleus

8.

What is the label A?

a)

protons

b)

neutrons

c)

electrons

d)

nucleus

9.

What is label E?

a)

protons

b)

neutrons

c)

electrons

d)

nucleus

10.
How many neutron are in the atom "K"?
a)
7
b)
2
c)
39
d)
20
11.
What is the atomic number for an element with three protons?
a)
2
b)
1
c)
3
d)
6
12.
How many valence electrons are found in atoms of group 14?
a)
4
b)
3
c)
14
d)
16
13.

Valence electrons are--

a)

the innermost electrons not available to bond

b)

all the electrons, whether they can bond or not

c)

the outermost electrons available to bond

14.

How many valence electrons does Hydrogen Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

15.
a)
2
b)
8
c)
3
d)
13
16.

A super heated gas!

a)

solid

b)

liquid

c)

gas

d)

plasma

17.

A ________ is a state of matter that is like a gas, but also has an electrical charge.

a)

Plasma

b)

Liquid

c)

Gas

d)

Solid

18.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

19.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

20.
Photosynthesis is an example of a
a)
physical change
b)
chemical change
21.

Rust on an iron bar is an example of chemical change.

a)

True

b)

False

22.
Freezing Juice?
a)
Physical Change
b)
Chemical Change
23.

A possible explanation for a problem that has not yet been tested is known as a ___________.

a)

data

b)

theory

c)

hypothesis

d)

fact

24.

Which type of variable in an experiment is the one being deliberately changed by the scientist?

a)

dependent variable

b)

independent variable

c)

data

d)

constants

25.
The variable that is being measured or observed is called the _______________. Hint: this is the variable that is the result or effect 
a)
independent variable
b)
dependent variable
c)
control variable
26.

Energy can't be _____.

a)

transformed

b)

converted

c)

made or created

d)

harnessed or produced

27.

This is energy that is stored for later use.

a)

kinetic energy

b)

mechanical energy

c)

potential energy

d)

electromagnetic energy

28.

This is energy of vibrating molecules that moves through matter

a)

sound

b)

mechanical

c)

thermal

d)

electrical

29.

What are the products of the chemical reaction pictured?

a)

CH4 and CO2

b)

CH4 and O2

c)

CO2 and H2O

d)

O2 and H2O

30.
What is the left part of a chemical equation called?
H2 + O → H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
31.
The coefficient in  3H2O is
a)
6
b)
2
c)
3
d)
5
32.
A compost pile in the backyard for the garden
a)
Heterogeneous
b)
Homogeneous
33.
Pepsi
a)
Heterogeneous mixture
b)
homogeneous mixture
34.
Iron is a good conductor, malleable and magnetic. What type of element is Iron? 
a)
Metal
b)
Nonmetal
c)
Metalloid
d)
Pretty
35.
Silicon is a semiconductor and has properties of both metals and nonmetals. What type of element is Silicon? 
a)
Metal
b)
Nonmetal
c)
Metalloid
d)
Pretty
36.

Which elements are to the right of the zig zag?

a)

metals

b)

nonmetals

c)

metalloids

37.

The elements located to the left of the stair-step

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Gases

38.

The elements located along the stair-step

a)

Metals

b)

Nonmetals

c)

Metalloids

39.

What is the image a picture of?

a)

Einstein Model

b)

Bohr Model

c)

Pierre Model

d)

Newton Model

40.

In Rutherford's famous "Gold Foil" experiment, some particles passed through the foil, some were deflected, and some were bounced straight back. This observation made Rutherford conclude

a)

gold atoms have a solid nucleus

b)

gold atoms can conduct electricity

c)

gold atoms are denser than other metals

d)

gold's elections orbit the nucleus at definite distances from the center

41.

Who's model does this picture represent?

a)

Dalton 1803-1808

b)

Rutherford 1911

c)

Bohr 1913

d)

modern model 1920 to the present

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