Atomic Structure and Properties

What is the smallest unit of matter?

• Atom

• Molecule

• Cell

• Particle

Which part of the atom has a positive charge?

• Proton

• Neutron

• Electron

• Nucleus

What is the center of an atom called?

• Orbit

• Shell

• Core

• Nucleus

Which part of the atom orbits the nucleus?

• Photon

• Proton

• Neutron

• Electron

What is the charge of a neutron?

• Positive

• Neutral

• Negative

• Variable

How many protons does a hydrogen atom have?

• Two

• Three

• Four

• One

What is the main component of the nucleus?

• Protons and Neutrons

• Electrons

• Neutrons and Electrons

• Protons and Electrons

Which of these is a simple procedure to find the number of electrons in an atom?

• Look at atomic number

• Look at atomic mass

• Count neutrons

• Count protons

What happens when an atom gains an electron?

• It becomes negative

• It stays neutral

• It becomes a proton

• It becomes positive

Which of these is a skill to identify an element?

• Using the periodic table

• Measuring weight

• Counting atoms

• Observing color