Day 20: Parts of an Atom PREASSESSMENT

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 

Tags

NGSS.HS-PS1-8

Which number here is my atomic number?

• 5

• 10.811

Tags

NGSS.HS-PS1-1

How many protons does this atom have?

• 2.5

• 6

• 5

• 10.811

Tags

NGSS.HS-PS1-1

How many Electrons

• 2.5

• 5

• 6

• 10.81

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NGSS.HS-PS1-1

In order for me to find the number of neutrons, I must round the atomic mass and then do what?

• atomic number-atomic mass

• atomic number x atomic mass

• atomic mass + atomic number

• atomic mass - atomic number

Tags

NGSS.MS-PS1-1

What do these isotopes of carbon all have in common?

• neutrons & mass number

• atomic number and neutrons

• atomic number and electrons

• protons, atomic number, and mass number

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NGSS.MS-PS1-1

How many neutrons does the isotope of lithium have?

• 8

• 3

• 4

• 5

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NGSS.HS-PS1-8

How many protons does this isotope of titanium have?

• 48

• 22

• 26

• 70

Tags

NGSS.HS-PS1-8

In a correctly written symbol what would be located in the "A" position?

• number of neutrons

• atomic number

• number of electrons 

• mass number

Tags

NGSS.HS-PS1-8