Parts of an Atom

all matter is made of what 

• energy 
• atoms 
• electrons 
• compounds 

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NGSS.MS-PS1-1

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

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

an atom with atomic number 6 would have how many protons 

• 6
• 12
• 3
• cannot be determined 

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NGSS.MS-PS1-1

Particles in an atom that are neutral and have no charge are 

• negatrons 
• electrons 
• neutrons 
• protons 

Who atomic model said electrons orbit the atom like planets orbit the sun 

• Einstein
• Thomson 
• Bohr 
• Dalton 

An atoms overall charge is 

• positive 
• depends on its mood 
• neutral 
• negative 

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NGSS.MS-PS2-3

Carbon is considered an element while carbon dioxide is considered a compound. This is because carbon dioxide is –

• a gas at room temperature.
• made of two different elements.
• given off by green plants.
• useful to human beings.

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NGSS.MS-PS1-1

A section of the Periodic Table of Elements is provided. What is the chemical symbol for magnesium?

• 12
• Mg
• 24.31
• Magnesium

Compounds are different than elements because compounds are -

• combinations of two or more elements
• not able to be broken down into parts
• made from the same type of atoms
• a pure substance, elements are not

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NGSS.MS-PS1-1