Question 1
Which of the following are forms of matter?
I) hydrogen gas
II) sunlight
III) ice
IV) wind
V) iron
◦ III and V
◦ I, III and V
◦ I and V
◦ II and IV
◦ all of the above
Question 2
Which of the following defines or expresses the concept of accuracy?
◦ the closest value to the expected answer
◦ deviation of the average
◦ average of the data
◦ reproducibility of a measurement
◦ difference between the accepted answer and the average value of the data