Atoms and Atomic theories

A small positively charged particle found in the the nucleus of an atom is called

• proton

• energy level

• nucleus

• matter

Negatively charged particles that move around outside the nucleus off an atom

• compound

• element

• electron

• neutron

Tags

NGSS.MS-PS2-3

___________ are the smallest particles in an element.

• Protons

• Atoms

• Nucleus

• milk

Tags

NGSS.MS-PS1-1

An element is determined by the number of ________ in its nucleus (also known as its atomic number).

• neutrons

• electrons

• protons

Chemist use letters of the alphabet as _________ for the elements.

• pictures

• colors

• symbols

What is the atomic number of this element?

• O

• 8

• 16

Tags

NGSS.MS-PS1-1

How many protons does this element have?

• 16

• 8

• 0

Tags

NGSS.MS-PS1-1

What is the atomic mass of this element?

• 13

• 26.982

• Al

Tags

NGSS.MS-PS1-1

How many electrons does this element have?

• 13

• 27

• Al

Tags

NGSS.MS-PS1-1

What is the name for the center of the atom where the protons and neutrons are located?

• Atomic weight

• Atomic number

• Nucleus

• Electron cloud

Tags

NGSS.MS-PS1-1