NGSS.MS-PS1-1

What is found in the nucleus of atoms?

• Protons and electrons.
• Protons, neutrons, and electrons.
• Protons and neutrons.
• Neutrons and electrons.

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NGSS.MS-PS1-1

How many elements are in C₆H₁₂O₆?

• 1
• 2
• 3
• 4

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NGSS.MS-PS1-1

all matter is made of what 

• energy 
• atoms 
• electrons 
• compounds 

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NGSS.MS-PS1-1

Ionic or covalent?
H₂O

• Ionic
• Covalent

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NGSS.MS-PS1-1

Classify the picture with the correct label.

• Element
• Compound
• Mixture of Elements and Compounds
• Mixture of Elements

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NGSS.MS-PS1-1

Element or compound?
H₂O

• Element
• Compound

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NGSS.MS-PS1-1

How many hydrogen atoms are there in a water molecule? 

• 0
• 1
• 2
• 3

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NGSS.MS-PS1-1

The ___________ of an atom is a unique number that describes how many protons an element has.

• atomic number

• valence electron

• nucleus

• electron cloud

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NGSS.MS-PS1-1

How many atoms are represented in the reactants in the equation?

• 6

• 7

• 4

• 5

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NGSS.MS-PS1-1

Andres is a chemist working at a company that makes ink. To make a new kind of ink, Andres mixed two liquid substances together in a sealed container. The diagram above shows the repeating groups of atoms that make up the two starting substances.

After mixing, Andres found two solid substances in the sealed container. (Nothing had escaped.) Which of the diagrams to the left shows the repeating groups of atoms that make up the ending substances?

• 
• 
• 
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NGSS.MS-PS1-1