Atomic Structure

Atomic Mass is the number of

• protons and neutrons in the nucleus of an atom

• protons and electrons in the nucleus of an atom

• neutrons and electrons in the nucleus of an atom

Tags

NGSS.MS-PS1-1

atomic number is

• the number of protons

• the number of electrons in the last shell

• the number of neutrons

• the location of an atom on the periodic table

Label the parts of an atom

a

b

c

d

e

Neutron

Nucleus

Electron cloud

Proton

Electron

Tags

NGSS.MS-PS1-1

Match the following

• neutron

• particle in the center of an atom that has no charge

• proton

• particle in the center of an atom with a positive charge

• electron

• particle on the outside of an atom with a negative charge

Tags

NGSS.MS-PS1-1

Match the Following

• A substance that cannot be broken down into simpler substances by chemical means.

• Element

• The smallest unit of an element that keeps the element’s chemical properties.

• Neutron

• Positively charged particles found in the nucleus of an atom.

• Proton

• The dense center of an atom containing protons and neutrons.

• Nucleus

• Particles with a neutral charge found in the nucleus of an atom.

• Atom

Protons can be found in the ​ (a)  

• nucleus

• Electron Cloud

• Orbitals

• By themselves

An atom with the same number of protons and electrons has a ​ (a)   net charge.

• neutral

• positive ion

• negative ion

• fish

An atom is always ​ (a)   charged because There is an ​ ​ (b)   number of ​ (c)   and electrons in an atom.

• neutrally

• equal

• protons

• electrons

• positively

• negatively

• neutrons

Tags

NGSS.MS-PS1-1

What is at the center of every atom? (a)  

• An electron

• A compound

• A molecule

• A nucleus

Protons are found in the ​ (a)  

• nucleus

• electron cloud