Unit 1 Content Quiz 2 8PS1.1 - Sharon Fletcher | Biblioteka

Obavezno

1

A student is asked to create a model of a lithium atom. The student's model shows a central cluster of protons and neutrons, and a single electron orbiting this central cluster. What is a key limitation of this model?

The model correctly shows the protons and neutrons are in the nucleus.

The model incorrectly shows that the electrons are negatively charged.

The model does not accurately represent the relative sizes or distances of the atom's components.

The model incorrectly shows that the nucleus is positively charged.

Obavezno

1

Which of the following models best represents the structure of an atom?

A central, positively charged nucleus surrounded by negatively charged electrons.

A positively charged sphere with negatively charged particles embedded throughout it.

A solid, indivisible sphere with a uniform charge.

A neutral particle with no internal structure.

Obavezno

1

A teacher provides students with a physical model of an atom. The model consists of a large, dense ball in the center and several small beads orbiting it. If the central ball represents the nucleus, what must be true about the small beads for this model to be accurate according to the standard?

The beads must be positively charged.

The beads must be negatively charged.

The beads must be neutral and have no charge.

The beads must be composed of both protons and neutrons.

Obavezno

1

In an atom, which of the following is responsible for its positive charge?

The electrons orbiting the nucleus

The neutral neutrons found in the nucleus.

The empty space surrounding the nucleus.

The positively charged protons in the nucleus.

Obavezno

1

What happens to the model of an atom when an electron is removed?

A. The atom becomes neutral.

The nucleus changes size.

The atom becomes positively charged.

The protons decrease.

Obavezno

1

An atom's overall charge is neutral. Which of the following statements explains why?

The number of protons is greater than the number of electrons.

The number of protons is equal to the number of electrons.

The number of neutrons is greater than the number of protons.

The number of neutrons is equal to the number of electrons

Obavezno

1

A student is asked to create a visual representation of an atom's components. Which representation correctly shows the charge of each component?

Neutron (0), Proton (+), Electron (−)

Neutron (0), Proton (−), Electron (+)

Neutron (+), Proton (−), Electron (0)

Neutron (+), Proton (0), Electron (−)

Obavezno

1

In a basic atomic model, where are electrons typically shown?

Inside the nucleus

Orbiting around the nucleus

Between atomic bonds

At the bottom of the atom

Obavezno

1

Which of the following best describes why an atom can be considered a system?

It is the smallest unit of matter.

It is composed of interacting components that work together to maintain its structure and properties.

It can be seen as a single, indivisible particle.

It can exist independently of other atoms.

Obavezno

1

What is the relationship between protons and electrons in a neutral atom?

Protons outnumber electrons

Equal numbers of protons and electrons

Electrons outnumber protons

No relationship exists