Water on Earth - Unit Review

The pH of pure water is

• 1

• 14

• 7

One molecule of water contains __ oxygen atoms.

• 1

• 0

• 2

• 4

Tags

NGSS.MS-PS1-1

Where in an atom can you find the neutrons?

• Orbiting the nucleus

• With the elecrons

• In the nucleus

The atomic number for Zinc is 30. It has an atomic mass of 65. How many protons would Zinc have?

• 30

• 35

• 65

• 0

Why do molecules of water stick together?

• Due to capillary action

• They are polar

• Density

• High specific heat capacity

Which of the following is not part of the water cycle?

• Condensation

• Precipitation

• Biodiversity

• Runoff

Tags

NGSS.MS-ESS2-4

An area of land that collects and supplies water to a river is the river's...

• watershed

• wetland

• tributary

• groundwater

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-1

The density of pure water is...

• zero (0)

• one (1)

• seven (7)

• fourteen (14)

Which of the following is not true about electrons?

• They flow from negative to positive.

• They are located in the nucleus.

• They are much smaller than protons.

• Their flow is what we call electricity.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which is the best conductor of electricity?

• freshwater

• saltwater

• they are equal