Gr 9 - IPS - Structure of an Atom

What is the smallest particle of an element that retains the chemical properties of that element?

• compound

• molecule

• ion

• atom

What are the three subatomic particles that make up an atom?

• protons, neutrons, and positrons

• protons, electrons, and photons

• protons, neutrons, and electrons

• protons, neutrons, and quarks

Tags

NGSS.MS-PS1-1

Where are protons and neutrons located within an atom?

• nucleus

• cytoplasm

• outer shell

• electron cloud

Tags

NGSS.MS-PS1-1

Where are electrons located within an atom?

• Energy levels or shells

• Nucleus

• Protons

• Neutrons

What is the atomic number of an element?

• The atomic number of an element is the number of neutrons in the nucleus of an atom.

• The atomic number of an element is the number of electrons in the nucleus of an atom.

• The atomic number of an element is the number of protons and neutrons in the nucleus of an atom.

• The atomic number of an element is the number of protons in the nucleus of an atom.

What is the mass number of an element?

• Total number of neutrons in the nucleus

• Total number of electrons in the nucleus

• Total number of protons and neutrons in the nucleus

• Total number of protons in the nucleus

What is an isotope?

• A variant of an element with the same number of protons but a different number of electrons.

• A variant of an element with the same number of neutrons but a different number of protons.

• A variant of an element with the same number of electrons but a different number of protons.

• A variant of an element with the same number of protons but a different number of neutrons.

Tags

NGSS.HS-PS1-8

The __________was discovered by J J Thomson

• electron

• proton

• neutron

• nucleus

The _________ tells us the number of protons in an atom.

• positive charge

• nucleus

• protons

• atomic number

The ___________ tells us the number of protons and neutrons in an atom.

• mass number

• atomic number

• nucleus

• empty space

Tags

NGSS.MS-PS1-1