Name: 
 

Sem 1 Practice Quiz


Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

1. 
Convert 2.35 kg into milligrams.
a.
2350 mg
d.
23350 mg
b.
23.5 mg
e.
do not know this answer
c.
2350000 mg
 

2. 
Place the following number in proper scientific notation: 93,000,000
a.
93 x 103
d.
9.3 x 107
b.
93 x 106
e.
Do not know how to do
c.
9.3 x 106
 

3. 
How many significant figures does the following number have: 0.030320
a.
7
d.
4
b.
6
e.
do not know
c.
5
 

4. 
Boston  and New York are 190 miles apert. What is this distance in meters?
a.
305,667 meter
d.
.019 meter
b.
33400 meters
e.
Do not know
c.
190000 meters
 

5. 
The law of conservation of mass is based on which of Dalton's five points.
a.
Elements are made up of tiny particles called atoms
d.
Atoms are indivisible in chemical reactions.
b.
Atoms are not created or destroyed in chemical reactions
e.
Do not this answer
c.
All atoms of a given element are identical
 

6. 
What is the density of medallian that wieghs 55.64gram and contains a volume of 2.6 mL?
a.
160
d.
2132
b.
21
e.
Do not know how to calculate this answer
c.
.0467
 

7. 
The boiling point of water is a _______________ .
a.
Chemical property
d.
Physical change
b.
Chemical change
e.
Do not know this answer
c.
Physical property
 

8. 
From the following how would water be described:
a.
Mixure
d.
solution
b.
pure substance
e.
do not know
c.
pure element
 

9. 
A 1.6-g sample of a metal that has the appearance of gold requires 5.8 j of energy to change its temperature form 23oC to 41oC. What is the specific heat of the metal?>
a.
43 J/g oC
d.
.45 J/g oC
b.
.34 J/g oC
e.
Do not know how to calculate this.
c.
.20 J/g oC
 

10. 
Convert 60.1 cal to joules. (4.184 j = 1 cal)
a.
251 J
d.
246 J
b.
14.36 J
e.
Do not know how to do conversions.
c.
4.56 J
 



 
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