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Bellwork 2 Week 3 2nd Nine Weeks

Total questions: 15

Worksheet time: 9mins

Name
Class
Date
1.

Which of the following shows the correct order of Atomic Theory Timeline

a)

Rutherford, Bohr, Dalton, Democritus, Thomson

b)

Bohr, Democritus, Thomson, Rutherford, Dalton

c)

Dalton, Thomson, Rutherford, Bohr, Democritus

d)

Democritus, Dalton, Thomson, Rutherford, Bohr

2.

Thomson Experimented with ______

a)

Gold Foil

b)

alpha particles

c)

cathode rays

d)

protons

3.

A burglar smashes the window of a nearby car to steal some money. What is this an example of?

a)

Physical property

b)

Chemical property

c)

Physical change

d)

Chemical change

4.

Stomach acid has a pH of approximately 2. What is this an example of?

a)

Physical property

b)

Chemical property

c)

Physical change

d)

Chemical change

5.
A solid piece of chocolate is melted and changed to liquid form. Which property of the piece of chocolate will remain the same?
a)
Texture
b)
Temperature
c)
Shape
d)
 Mass
6.
An isotope has three forms.  30% have a mass of 4 amu, 20% have a mass of 5 amu and 50% have a mass of 3 amu.  Average atomic mass will be closest to
a)
2 amu
b)
3 amu
c)
4 amu
d)
5 amu
7.

Isotopes of an element have a different number of...

a)

Protons

b)

Neutrons

c)

Electrons

d)

Mass

8.

Convert this number to standard notation: 7.1 x 104

(a)  

9.

Convert this number into scientific notation: 0.068

a)

6.9 x 106

b)

6.8 x 10-9

c)

6.8 x 10-2

d)

None of the above

10.

Periodic law states that the elements are arranged according to their atomic ________ so that elements with similar chemical properties are in the same ________ and properties repeat periodically.

a)

numbers, rows

b)

masses, rows

c)

masses, column

d)

numbers, column

11.

Metals (select all that apply)

a)

are found on the right side of the periodic table.

b)

are found on the left side of the periodic table.

c)

are good conductors of heat and electricity.

d)

are brittle.

e)

are malleable and ductile.

12.

Nonmetals (select all that apply)

a)

are found on the right side of the periodic table.

b)

are found on the left side of the periodic table.

c)

are good conductors of heat and electricity.

d)

are brittle.

e)

can be solid, liquids, or gases at room temperature.

13.
How many significant figures: 216 m
a)
1
b)
2
c)
3
d)
0
14.
How many significant figures: 153.0 mL
a)
1
b)
2
c)
3
d)
4
15.
How many significant figures: 0.001 g
a)
4
b)
3
c)
2
d)
1