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

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

3.	SHOW WORK - You perform an experiment where you heat 24.75 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)	23.5 g	
B)	24.75 g	
C)	1.25 g	
D)	26 g	

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

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

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

3.	SHOW WORK - You perform an experiment where you heat 24.75 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)	23.5 g	
B)	24.75 g	
C)	1.25 g	
D)	26 g	

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

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

6.	SHOW WORK - What is the mass of an object that has a density of 2.5 g/mL and a volume of 6 mL?	
A)	15 g	
B)	2.5 g	
C)	2.4 g	
D)	0.416667 g	

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

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

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)	physical	
B)	mixed	
C)	potential	
D)	chemical	

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

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

6.	SHOW WORK - What is the mass of an object that has a density of 2.5 g/mL and a volume of 6 mL?	
A)	15 g	
B)	2.5 g	
C)	2.4 g	
D)	0.416667 g	

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

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

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)	physical	
B)	mixed	
C)	potential	
D)	chemical	

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

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

Answer Key

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