Short QAs
1. What is mass?
2. What is the SI unit of mass?
3. Why does weight change from place to place?
4. What is volume?
5. What is the SI unit of volume?
6. Name two instruments used to measure volume.
7. Define density.
8. What does higher density indicate?
9. Name the three temperature scales.
10. Which temperature scale is the SI scale?
11. Can Kelvin temperature be negative?
12. What is scientific notation?
13. What is done to exponents during multiplication in scientific notation?
14. What is done to exponents during division in scientific notation?
15. What are significant figures?
16. Are zeros before the first non-zero digit significant?
17. Are zeros between non-zero digits significant?
18. When are zeros at the end significant?
19. How many significant figures are present in 0.200?
20. What are exact numbers?
MCQs
1. Prefix for 10-3
is:
A. micro
B. milli
C. nano
D. pico
2. Prefix for 106 is:
A. kilo
B. mega
C. giga
D. tera
3. Symbol for micro is:
A. m
B. μ
C. n
D. c
4. 1 nanometre equals:
A. 10-6m
B. 10-9m
C. 10-3m
D. 10-12m
5. Prefix for 1012 is:
A. giga
B. tera
C. peta
D. mega
6. Which prefix is largest?
A. kilo
B. mega
C. giga
D. yotta
7. Prefix for 10-9 is:
A. micro
B. milli
C. nano
D. pico
8. Symbol ķ represents:
A. 102
B. 103
C. 106
D. 10-3
9. 1 milligram equals:
A. 10-3g
B. 10-6g
C. 103g
D. 102g
10. Prefix ‘pico’ means:
A. 10-9
B. 10-12
C. 10-6
D. 10-15
