Comparing Numbers

Which of the following numbers represents the atomic number of Carbon?

• 6

• 12

• 8

• 14

In a chemical reaction, if the reactants have a total mass of 50 grams and the products have a total mass of 50 grams, what scientific principle does this demonstrate?

• Law of Conservation of Mass

• Law of Definite Proportions

• Law of Multiple Proportions

• Law of Conservation of Energy

Tags

NGSS.MS-PS1-5

Which of the following numbers is closest to the average human body temperature in degrees Celsius?

• 37

• 32

• 40

• 25

If a scientist measures a liquid's pH as 7, what does this indicate about the liquid?

• It is neutral

• It is acidic

• It is basic

• It is corrosive

In an experiment, a student measures the length of a metal rod as 15.5 cm. If the actual length is 15.0 cm, what is the percentage error?

• 3.33%

• 0.33%

• 5%

• 1%

Which number represents the speed of light in a vacuum in meters per second?

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

What is the atomic mass of Oxygen?

• 16

• 8

• 12

• 14

If a cell divides into two identical cells, what is this process called?

• Mitosis

• Meiosis

• Binary Fission

• Fusion

Which of the following numbers is the freezing point of water in degrees Celsius?

• 0

• 32

• 100

• -1

A scientist observes that a gas occupies a volume of 2 liters at a pressure of 1 atm. If the pressure is increased to 2 atm, what will be the new volume, assuming temperature remains constant?

• 1 liter

• 2 liters

• 4 liters

• 0.5 liters