Tutorial 2/1 (7th Grade) - Science

This is a particle that carries a positive electrical charge.

• Neuron

• Ion

• Proton

• Electron

Tags

NGSS.HS-PS1-3

NGSS.HS-PS3-5

The Greek word atomos means ______.

• atomic number

• number of neutrons

• negative and positive charges

• uncuttable or something that cannot be divided

Any substance that cannot be broken into two or more simpler substances is known as _______.

• an element

• a subatomic hadron particle

• a chemical element

• an isotope

This contains a dense central nucleus that is surrounded by a cloud of negatively charged electrons.

• proton

• electron

• neutron

• atom

Tags

NGSS.MS-PS1-1

This is a particle that carries a negative electrical charge.

• ion

• electron

• proton

• neutron

The number of protons in the nucleus of an atom is known as the ________. atomic

• subatomic hadron particle

• atomic number

• nucleon

• neutron factor

These have the same number of protons in each atom but the neutron numbers can vary

• elements

• isotopes

• atomic numbers

• subatomic hadron particles

The study of the composition, structure, properties and change of matter is known as _______.

• matter

• atoms

• physics

• chemistry

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-5

A substance that consists of a single type of atom is _________.

• a chemical element

• an element

• a nuclei

• an isotope

The center or core of an atom is called ______.

• an atomos

• a neutron

• a nucleus

• a nucleon