Atoms Molecules and Ions

What are the building blocks of matter?

• Atoms

• Protons

• Cells

• Neutrons

The nucleus of an atom is made up of ___________________.

• Protons and Neutrino

• Neutrons and Electrons

• Protons and Neutrons

• Protons and Electrons

Which subatomic particle has a negative charge in the atom?

• proton

• neutron

• electron

• quark

Tags

NGSS.HS-PS1-1

ALL atoms of the same element have:

• same number of proton

• same number of nucleon

• different number of neutron

• different number of electron

Which of the following does not have an electrical charge?

• Neutron

• Electron

• Neuron

• Proton

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

How would O2 be qualified. Check all answers that apply.

• Atom

• Molecule

• Compound

What are atoms composed of?

• Protons and electrons.

• Protons, neutrons, and electrons.

• Neutrons and electrons.

• Ions, elements, and compounds.

Tags

NGSS.MS-PS1-1

What charge does an atom have when it GAINS electrons?

• Positive

• Negative

• Neutral

What subatomic particle changes in an ion?

• The number of electrons

• The number of protons

• The number of neutrons

Answer explanation

Atoms can only easily gain and lose electrons. They are in orbit, away from the nucleus.

Sodium has an atomic number of 11, how many protons does this atom have?

• 22
• 11
• 12
• 2

Answer explanation

The smaller number is the atomic number and it is the number of protons in the nucleus.

Tags

NGSS.MS-PS1-1