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How many atoms of sodium are in this molecule?

• 3

• 6

• 5

• 0

Tags

NGSS.MS-PS1-1

What is this in molecular formula?

• 3water

• 3H₂O 

• H3O3

• 3O6H

Tags

NGSS.MS-PS1-1

Matter and energy can flow into and out of a/an...

• atom

• molecule

• closed system

• open system

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS2-3

If a substance is less dense than water it will...

• float

• sink

• combine with water

List the steps of the scientific method

d

e

f

c

b

a

Communicate results

Conduct experiment

Ask a question

Draw conclusions

Analyze results

Form a hypothesis

When electricity was ran through water, what gasses were released?

• water vapor and oxygen

• hydrogen and sodium

• oxygen and hydrogen

• water vapor and hydrogen

Tags

NGSS.MS-PS1-2

When energy was added to water with heat, it created...

• Carbon dioxide bubbles

• oxygen gas

• hydrogen gas

• water vapor

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Gas exchange is needed to supply _____________ to cells and remove __________________

• carbon dioxide; oxygen

• oxygen; food

• oxygen; carbon dioxide

• carbon dioxide; water

The air sacs that are covered with capillaries where gas exchange takes place.

• Bronchi

• Trachea

• Oxygen

• Alveoli

Tags

NGSS.MS-LS2-3

How does oxygen get into the blood?

• it enters through the villi in the small intestine

• it enters through the alveoli in the lungs

• it is created during cellular respiration