Unit C0 Quiz – Foundations 			

Name: ____________________________________________  

Period: ________ Seat #: _________

Directions: Pick the best answer possible. You MUST show work in the boxes to earn credit if any math is involved. No work, no credit.  You MUST bubble your final answer on your bubble sheet. No points will be given without a bubbled answer. All electronics must be stored in the calculator holder, and you must use Mrs. Farmer's class calculator. 

1.	Which of the following pairs demonstrates the law of multiple proportions?	
A)	C2H4 and C2H4O	
B)	PO3 and PO4	
C)	H2O and H2	
D)	CH4 and CO2	

2.	SHOW WORK - What is the mass of an object that has a density of 2.5 g/mL and a volume of 14 mL?	
A)	35 g	
B)	5.6 g	
C)	0.178571 g	
D)	2.5 g	

3.	Which is an example of a homogeneous mixture?	
A)	aluminum	
B)	chicken soup	
C)	kool-aid	
D)	oil and water	

4.	A __________ change involves a change in the fundamental components of the substance; a given substance changes into a different substance or substances.	
A)	mixed	
B)	chemical	
C)	potential	
D)	physical	

5.	What is wrong with the following graph?
DON’T BUBBLE! Write answer HERE:

Unit C0 Quiz – Foundations 			

Name: ____________________________________________  

Period: ________ Seat #: _________

Directions: Pick the best answer possible. You MUST show work in the boxes to earn credit if any math is involved. No work, no credit.  You MUST bubble your final answer on your bubble sheet. No points will be given without a bubbled answer. All electronics must be stored in the calculator holder, and you must use Mrs. Farmer's class calculator. 

1.	Which of the following pairs demonstrates the law of multiple proportions?	
A)	C2H4 and C2H4O	
B)	PO3 and PO4	
C)	H2O and H2	
D)	CH4 and CO2	

2.	SHOW WORK - What is the mass of an object that has a density of 2.5 g/mL and a volume of 14 mL?	
A)	35 g	
B)	5.6 g	
C)	0.178571 g	
D)	2.5 g	

3.	Which is an example of a homogeneous mixture?	
A)	aluminum	
B)	chicken soup	
C)	kool-aid	
D)	oil and water	

4.	A __________ change involves a change in the fundamental components of the substance; a given substance changes into a different substance or substances.	
A)	mixed	
B)	chemical	
C)	potential	
D)	physical	

5.	What is wrong with the following graph?
DON’T BUBBLE! Write answer HERE:

6.	SHOW WORK - You perform an experiment where you heat 8.75 g an unknown substance over a flame. You notice some gas bubbles forming and leaving the open beaker. When finished you weigh the beaker and find there is 1.25 g of substance left in the beaker. How much gas escaped?	
A)	10 g	
B)	7.5 g	
C)	1.25 g	
D)	8.75 g	

7.	Which of the following is a chemical change?	
A)	Peanuts are crushed.	
B)	A “tin” can rusts.	
C)	A damp towel dries.	
D)	Water condenses on a mirror.	

8.	Which of the following is an element?	
A)	magnesium (Mg)	
B)	the earth	
C)	soda	
D)	water (H2O)	

9.	A __________ change involves a change in one or more physical properties, but no change in the fundamental components that make up the substance.	
A)	potential	
B)	chemical	
C)	physical	
D)	mixed	

10.	An example of a mixture is	
A)	gold (Au)	
B)	the air in this room	
C)	purified water	
D)	hydrogen fluoride (HF)	

11.	Which of the following is only a physical change?	
A)	Cookies burn in the oven.	
B)	A banana ripens.	
C)	Leaves turn colors in the fall.	
D)	Ice melts	

6.	SHOW WORK - You perform an experiment where you heat 8.75 g an unknown substance over a flame. You notice some gas bubbles forming and leaving the open beaker. When finished you weigh the beaker and find there is 1.25 g of substance left in the beaker. How much gas escaped?	
A)	10 g	
B)	7.5 g	
C)	1.25 g	
D)	8.75 g	

7.	Which of the following is a chemical change?	
A)	Peanuts are crushed.	
B)	A “tin” can rusts.	
C)	A damp towel dries.	
D)	Water condenses on a mirror.	

8.	Which of the following is an element?	
A)	magnesium (Mg)	
B)	the earth	
C)	soda	
D)	water (H2O)	

9.	A __________ change involves a change in one or more physical properties, but no change in the fundamental components that make up the substance.	
A)	potential	
B)	chemical	
C)	physical	
D)	mixed	

10.	An example of a mixture is	
A)	gold (Au)	
B)	the air in this room	
C)	purified water	
D)	hydrogen fluoride (HF)	

11.	Which of the following is only a physical change?	
A)	Cookies burn in the oven.	
B)	A banana ripens.	
C)	Leaves turn colors in the fall.	
D)	Ice melts	

Answer Key

1.	B	
2.	A	
3.	C	
4.	B	
5.	No descriptive title	
6.	B	
7.	B	
8.	A	
9.	C	
10.	B	
11.	D