Homework-Structure of atoms

What number indicates the nucleus?

• 1
• 2
• 3
• 4

Tags

NGSS.HS-PS1-8

What is at the center of every atom?

• An electron
• A compound
• A molecule
• A nucleus

Tags

NGSS.HS-PS1-8

The particles with no charge in an atom are the _______.

• electrons
• neutrons
• protons
• protons and neutrons

Tags

NGSS.MS-PS1-1

• Nucleus, positive
• Nucleus, negative
• Nucleus, neutral
• Electron Cloud, positive

Tags

NGSS.MS-PS1-1

How many protons are there in an atom of aluminium?

• 27

• 13

• 14

• 17

Tags

NGSS.MS-PS1-1

What are valence electrons?

• electrons on the first orbital always
• nucleus
• the outermost shell
• the number of electrons on the outermost orbital

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Protons are

• negative

• positive

• neutral

all matter is made of what 

• energy 
• atoms 
• electrons 
• compounds 

Tags

NGSS.MS-PS1-1

Neutrons have almost exactly the same mass as

• electrons.

• positrons.

• protons.

• quarks.

Tags

NGSS.HS-PS1-8

Smallest particle of an element that still has the properties of that element. 

• Atom
• Compound
• Molecule
• Element