1. Chemical Foundations

2. Chemical Foundations $200 $200 $200 $200 $200 $400 $400 $400 $400 $400
Density and Graphing
Types of Matter
Extreme Random
Science!
Measuring
$200
$200
$200
$200
$200
$400
$400
$400
$400
$400
$600
$600
$600
$600
$600
$800
$800
$800
$800
$800
$1000
$1000
$1000
$1000
$1000

3. Chemistry is the study of what?
200
Chemistry is the study of what?
Back
Answer: matter

4. What is meant by “qualitative” when making observations?
400
What is meant by “qualitative” when making observations?
Back
Answer: no numbers are involved

5. How does a conclusion from an experiment become a theory?
600
How does a conclusion from an experiment become a theory?
Answer: repeated experimentation by many scientists with consensus on conclusion
Back

6. 800
Write a hypothesis for an experiment addressing the following problem: The congestion in the central hallway between N and W halls is terrible during passing period.
Back
Answer: Many different answers

7. What are the four evidences of a chemical change?
1000
What are the four evidences of a chemical change?
Answer: color change, gas formation, energy change, formation of a precipitate
Back

8. Convert 0.004630 to scientific notation with the correct sig. figs.
200
Convert to scientific notation with the correct sig. figs.
Back
Answer: 4.630x10-3

9. What are the base SI units for mass, length, and time?
400
What are the base SI units for mass, length, and time?
Back
Answer: kilograms, meters, seconds

10. What is the reading on the following graduated cylinder?
600
What is the reading on the following graduated cylinder?
Back
Answer: 73.0

11. How many microliters are in 24 decaliters?
800
How many microliters
are in 24 decaliters?
Back
Answer: 240,000,000 μL

12. 1000
Calculate the density of the following substance, rounding your answer correctly.
volume = mL
mass = 15.0 g
Back
Answer: g/mL

13. What is the formula for calculating density?
200
What is the formula for calculating density?
Back
Answer: D = m/V

14. 400
If a 4.5 kg sample a metal has a density of 8.3 g/mL, what is the volume of the sample in mL?
Back
Answer: 540 mL

15. 600
A student makes the following measurements for the density of gold (actual density = 19.3 g/mL). Comment on her accuracy and precision.
Trial 1
Trial 2
Trial 3
18.2 g/mL
18.1 g/mL
Back
Answer: precise but not accurate

16. 800
If diamond has an actual density of 3.52 g/cm3 but you measure it to be 3.68 g/cm3, what is the percent error of your measurement?
Back
Answer: 4.55 %

17. What is the density of the following substance?
1000
What is the density of the following substance?
Back
Answer: 5 g/mL

18. What two types of matter are pure substances?
200
What two types of matter are pure substances?
Back
Answer: elements and compounds

19. Which of the following represents a compound?
400
Which of the following represents a compound?
Back
Answer: D

20. What type of matter is present in the following picture?
600
What type of matter is present in the following picture?
Back
Answer: heterogeneous mixture

21. 800
If rubbing alcohol evaporates off of your arm, is this a physical property, chemical property, physical change, or chemical change?
Back
Answer: physical change

22. Name 2 evidences that cellular respiration is a chemical change.
1000
Name 2 evidences that cellular respiration is a chemical change.
Back
Answer: energy change, gas produced

23. Who is the principal of the school?
200
Who is the principal of the school?
Back
Answer: Mr. Carrol

24. Who is playing in the first regular season NFL game on Thursday night?
400
Who is playing in the first regular season NFL game on Thursday night?
Back
Answer: Steelers and Patriots

25. Who painted the Mona Lisa?
600
Who painted the Mona Lisa?
Back
Answer: Leonardo DiCaprio

26. What is the capital of Texas?
800
What is the capital of Texas?
Answer: Austin
Back

27. What structure in a plant cell is responsible for photosynthesis?
1000
What structure in a plant cell is responsible for photosynthesis?
Back
Answer: chloroplast