Chemistry: The Atom

The three main subatomic particles are electrons, protons and ____________.

• photons
• neurons
• neutrons
• quarks

Tags

NGSS.HS-PS1-8

What are the two main parts of the atom?

• nucleus and cytoplasm
• nucleus and electron cloud
• core and electron cloud
• protons and neutrons

Tags

NGSS.MS-PS1-1

In order for an atom to be neutral what has to be true?

• The atom has more protons than neutrons
• The atom has more neutrons than protons
• The atom has the same number of protons and neutrons
• The atom has the same number of protons and electrons

Most of the mass in an atom is made up of _____________________?

• protons and electrons
• protons and neutrons
• neutrons and electrons
• electrons and quarks

Tags

NGSS.HS-PS1-7

A proton has approximately the same mass as a(n) _______________.

• straight pin
• quark
• electron
• neutron

The atomic number represents the identity of the ________________.

• mass of the atom
• element
• electrons
• isotopes

The proton number of an atom is equal to the _________________ of the atom.

• mass number
• atomic mass number
• atomic number
• neutron number

The total number of protons and neutrons in an atom represent the __________________ of an atom.

• mass number
• atomic mass number
• isotopes
• electron cloud

What is the electrical charge of a proton?

• 1+
• 1-
• neutral
• 2-

Tags

NGSS.HS-PS2-4

Atoms of the same element which have a different number of neutrons are called _________________.

• ions
• isotopes
• quarks
• molecules