1. Unit 1 Chemistry Study guide: Measurement and Estimation
*Click on each slide to see the answer

2. 1
A B C 2 3 4 5 6 7 8 9 10 11 12

3. Question 1A
How many significant digits are there in the number ? 5

4. Question 1B
How many significant digits are in the number ? 3

5. Question 1C How many significant digits are there in the number 100.0?4

6. Question 2 A
Convert the following number into scientific notation: 3,450,700
X 106

7. Question 2 B
Convert the following number into scientific notation:
4.5 x 10 -4

8. Question 2C
Convert the following number into scientific notation: 1,000,000,000.00
1 x 10 9

9. Question 3 A
Convert this number from scientific notation into standard notation: x 105
602,000

10. Question 3B
Convert this number from scientific notation into standard notation: 9.1 x 10 -3
0.0091

11. Question 3C
Convert the following number from scientific notation into standard notation: x 10 9
5,400,000,000

12. Question 4A
What metric unit would be most useful for finding the volume of a swimming pool?
Kiloliter

13. Question 4B
What metric unit would be most useful for finding the distance across a room?
meter

14. Question 4C
What metric unit would be most useful for finding the mass of a paperclip?
gram

15. Question 5A
Convert the following: 50 m to Km
0.050 Km

16. Question 5B
Convert the following: Kg to cg
670 cg

17. Question 5C
Convert the following: 12 cm to mm
120 mm

18. Question 6A
Convert the following: 1.3 x mL to L
1.3 x L

19. Question 6B
Convert the following: 44 cm to m
0.44 m

20. Question 6C
Convert the following: 7.4 Kg to g
7,400 g

21. Question 7A
How many variables and controls should you have in any given experiment?
One variable we are testing, one that will change because of the test and many controls.

22. Question 7B
If we were going to test how sunlight affects the growth of a plant what might be some controls that we would need to have?
Temperature, number of hours of light/dark, amount of food and water, time of day of watering, etc.

23. Question 7C
One of the best ways to illustrate data is with a graph, what is a best fit line?
It is a line that shows the general trend of your data, it gives us the average of the values.

24. Question 8A
Round the following to 3 significant digits:30,450
30,400

25. Question 8B
Round the following to 1 significant digit:
0.0001

26. Question 8C Round the following to 4 significant digits: 1,200,569
1,201,000

27. Question 9A
Which of the following values is the most precise? 3.02; 3; 3.0
3.02

28. Question 9B Why is the hundredths place more precise than the tenths?
Because it is a smaller value which indicates smaller (more precise) units on your measuring tool.

29. Question 9C
An object measures exactly cm; which of the following is the most accurate? ; 3.500; 3.437
3.437

30. Question 10A
What are some tools that we might use to measure volume in the laboratory?
Beaker, graduated cylinders, Erlenmeyer flasks, burette, etc.

31. Question 10B
How are ml and cm3 related to each other?
1 ml = 1 cm3

32. Question 10C
What is 1000 cm3 equivalent to in liquid volume? 1L

33. Question 11A What is the difference between mass and weight?
Mass does not change while weight is dependant on the pull of gravity so can change depending on your location.

34. Question 11B What types of tools do we use to measure mass?
Balances such as triple beam or double pan.

35. Question 11C What is the standard unit of measurement for mass?
Kilogram

36. Question 12A
This graph indicates what type of relationship?
Direct

37. Question 12B What type of relationship does this graph indicate?
Inverse

38. Question 12C
What is the equation for an inverse relationship?
K = yx