Atomic Structure

What is the atomic number of this atom?

• 9
• 10
• 19
• 27

Tags

NGSS.MS-PS1-1

The element symbol for sodium:

• Na
• N
• S
• So

Atoms are neutral because they have the same number of

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

Matter that is made up on only one type of atom is called

• a compound
• a subatomic particle
• an element
• water

Tags

NGSS.MS-PS1-1

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.MS-PS1-1

The smallest particle of an element that retains the properties of that element is a(n)

• atom
• electron
• proton
• neutron

The atomic number of an elements is the total number of which particles in the nucleus?

• neutrons
• protons
• electrons
• protons and electrons

What are electrons?

• Massive, positively charged particles
• Tiny, negatively charged particles
• Clouds of dust in the nucleus
• Neutral particles around the nucleus

Tags

NGSS.MS-PS1-1

What is the tiny, massive central part of the atom?

• Neutron
• Electron
• Proton
• Nucleus

Tags

NGSS.HS-PS1-8

what does the 6 represent?

• Atomic mass
• atomic number
• chemical symbol
• element name