Chem of Life/Water

What is an Atom?

• Building block of elements

• Neutron

• Unit of mass

• Atomic mass unit

Electron

• Negatively charged particle that spins around the outside of the nucleus.

• Positively charged particle that spins around the outside of the nucleus.

• Neutrally charged particle that spins around the outside of the nucleus.

• None of the above

Tags

NGSS.MS-PS1-1

Isotope

• Two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons.

• Element on the periodic table.

• The center of a cell.

• Particle that makes up an atom (protons, electrons, neutrons).

Nucleus

• The area around an atom's nucleus where electrons are most likely to be found. 

• Particle that makes up an atom (protons, electrons, neutrons).

• All of the aboive

• Small, dense region consisting of protons and neutrons at the center of an atom.

Tags

NGSS.HS-PS1-8

What particle uniquely identifies an element?

• Number of Valence Electrons
• Number of Protons
• Number of Electrons
• Atomic Mass

What subatomic particle is electrically neutral (no charge)?

• Proton

• Ion

• Neutron

• Electron

Anything that has mass and takes up space is called

• heterogeneous
• homogeneous
• matter
• density

What charge does an Electron have?

• Negative
• Positive
• Neutral
• Complicated

What does the nucleus consist of?

• Protons + Electrons
• Neutrons + Electrons
• Atoms
• Protons + Neutrons

Tags

NGSS.HS-PS1-8

Most of the mass in an atom is concentrated in the...

• electrons
• nucleus
• protons
• empty space