Atomic Composition and States of Matter

Which particle contributes the negative charge to the atom?

• proton
• electron
• neutron
• nucleus

Which particle does not contribute mass to the atom?

• Proton
• Neutron
• Electron
• Nucleus

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

• photons
• neurons
• neutrons
• quarks

Tags

NGSS.MS-PS1-1

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

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

DIFFERENT kinds of atoms chemically combined to form a substance are

• Mixture
• Element
• Compound
• Substance

Tags

NGSS.MS-PS1-1

 A homogeneous mixture has the same composition of particles throughout.

• True
• False

Water is an element

• true
• false

A mixture that does not look the same throughout:

• heterogeneous mixture
• homogeneous mixture
• the periodic table
• water

Positively charged particles in the nucleus of an atom

• protons

• electrons

• neutrons