NGSS.MS-PS1-1

the central region of an atom where its neutrons and protons are is its 

• nucleus 
• electron cloud
• core 
• center 

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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

In an atom, electrons_.

• Are located in the nucleus
• Are paired with neutrons
• Travel outside the nucleus
• Are always in the same place in an atom

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NGSS.MS-PS1-1

What is the picture displayed?

• atom
• element
• molecule
• compound

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NGSS.MS-PS1-1

pure substances that are composed of two or more types of elements that are chemically combined

• solvent

• compound

• mixture

• fixture

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NGSS.MS-PS1-1

What is a molecule?

• two elements bonded together (sharing electrons)

• a mixture of different substances

• smallest individual particles

• salt mixed in water

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NGSS.MS-PS1-1

Valence electrons are the number of

• protons in the atom

• electrons in the atom

• protons + neutrons in the nucleus

• electrons in the outside shell of the atom

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NGSS.MS-PS1-1

What is something that is made of all the same atoms or groups of atoms?

• Substance

• Molecule

• Reactant

• Property

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NGSS.MS-PS1-1

Composition of rocks refers to...

• What song plays when you find the rock.

• What the rock is made of.

• What color the rock is.

• How hard a rock is.

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NGSS.MS-PS1-1

What element, based on the subatomic particles in the atom, is shown?

• Beryllium

• Helium

• Lithium

• Oxygen

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NGSS.MS-PS1-1