2023-24 Physical Science Ch 3 TEST "Objective Questions"

Atoms can gain electrons but cannot lose electrons.

• True

• False

Tags

NGSS.MS-PS1-5

Protons have what electrical charge?

• positive

• negative

• neutral (no charge)

• both positive and negative

Neutrons have what electrical charge?

• positive

• negative

• neutral (no charge)

• both positive and negative

Electrons have what electrical charge?

• positive

• negative

• neutral (no charge)

• both positive and negative

Tags

NGSS.MS-PS2-3

Atoms of the same element always have the same number of protons.

• True

• False

Isotopes of an element have different numbers of ________________.

• protons

• electrons

• neutrons

• none of these answers

The Bohr atomic model suggested that electrons move

• in a flat ring around a massive, positively charged center (nucleus)

• only in distinct, spherical orbits at fixed distances from the nucleus

• randomly around the nucleus

• rapidly throughout a uniform, positively charged matrix

Oddly shaped regions in atoms where electrons are likely to be found

• Orbitals

• Atomic Spheres

• Energy Space

• Nucleus

The key factor that drove the development of new atomic models is

• workability

• measureability

• understandability

• changeability

An Ion with a net positive charge is called a(n) _________________.

• Anion

• Cation