Intro to chemistry

Based on the graph, what happens to the solubility of CO2 as the temperature increases?

• it increases

• it stays the same

• it decreases

• what is a graph?

Which of the following is an example of quantitative data?

• grey

• oily

• 44.2^oC

• Copper

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

A 5mL sample of water has a mass of 5g. What is the density of water?

• 1 g/mL

• 1 mL/g

• 25 gmL

• 10 gmL

What is chemistry?

• the study of matter

• the study of the universe

• the study of science

• the study of numbers

Anything that takes up space and has mass is known as...

• matter

• element

• ions

• nucleus

• I do not know

How many significant figures: 2016 m

• 1
• 2
• 3
• 4