Sci6_U3: Matter Review 1

Select all of the particles that affect the overall electric charge of an atom.

• protons

• neutrons

• electrons

• molecules

Tags

6.5.a

What are the parts that make up an atom?

• electrons, neutrons, and protons

• electrons, protons, and gamma rays

• neutrons, photons, and beta particles

• neutrons, protons, and alpha particles

Tags

6.5.a

Where is the smallest negatively-charged particle found in an atom?

• nucleus

• orbits in the nucleus

• orbits around the nucleus

• between the proton and neutron

Tags

6.5.a

An atom with an equal ratio of protons to electrons gains an electron. Upon gaining an electron, the atom will

• lose a proton.

• gain a neutron.

• maintain its neutral state.

• become negatively charged.

Tags

6.5.a

Based on beryllium's position on the periodic table of the elements, which combination could best be used to model the structure of a beryllium atom?

• 4 white balls, 4 black balls, and 5 gray balls

• 4 white balls, 4 black balls, and 9 gray balls

• 4 gray balls, 4 black balls, and 4 white balls

• 4 gray balls, 5 black balls, and 9 white balls

Tags

6.5.a

Which statement best describes a neutron?

• It has a negative charge.

• It moves around the nucleus.

• It adds mass to the nucleus.

• It has a positive charge.

Tags

6.5.a

What electrical charge does a proton have in an atom?

• +2

• +1

• −1

• −2

Tags

6.5.a

An atom would lose the least amount of mass if it lost

• a proton

• a neutron

• a nucleus

• an electron

Tags

6.5.a

Which particles are responsible for the electric charge of an atom?

• protons and neutrons

• protons and electrons

• neutrons and molecules

• molecules and electrons

Tags

6.5.a

Which parts of an atom contribute most to its mass?

• protons

• electrons

• protons and neutrons

• neutrons and electrons

Tags

6.5.a