Honors Midterm Review 24

An observation made with your senses

• Qualitative observation

• Quantitative observation

• temperature

• conclusion

What is an hypothesis?

• a guess

• a testable, tentative explanation

• a theory

• data

Which of the following is an example of quantitative data?

• grey

• oily

• 44.2^oC

• Copper

Which is NOT an SI base unit?

• second

• kilogram

• degree Celsius

• meter

What is the correct representation of 702.2g in scientific notation?

• 7.02 x 10³g

• 70.22 x 10¹ g

• 7.022 x 10² g

• 70.22 x 10² g

A piece of metal has a mass of 61.3g and a volume of 5.84cm³. What is the the metal? Hint: density!

• copper (8.96 g/cm³)

• molybdenum (10.2 g/cm³)

• silver (10.5 g/cm³)

• technetium (11.5 g/cm³)

Which of the following shows 229.613 correctly rounded to four significant figures and in scientific notation?

• 0.2296 x 10^-3

• 2.29 x 10³

• 2.296 x 10^-2

• 2.296 x 10²

How many significant figures (digits) are in the number 0.0034051?

• 4

• 5

• 7

• 3

What is chemistry?

• the study of matter

• the study of the universe

• the study of science

• the study of numbers

What is the volume of Object X?

• 10.0 cm³
• 15.0 cm³
• 20.0 cm³
• 25.0 cm³