MAKE-UP STAAR Review on Atomic Structure

The diagram shows a model of an atom.

Which statements best describe the parts and charge of the atom?

Select 3 correct answers.

• Particles X and Y are outside the nucleus.

• Particles X and Y are inside the nucleus.

• Particles X or Y cause the nucleus to have a positive charge.

• Particles X or Y cause the nucleus to have a negative charge.

• Particle Z is outside the nucleus with a negative charge.

Tags

NGSS.MS-PS1-1

The diagram shows a model of an atom.

Which statements best describe the charges on the particles in this model?

Select 2 correct answers.

• Particles X or Y have a positive charge.

• Particles X and Y each have a negative charge.

• Particle Z has a positive charge.

• Particle Z has a negative charge.

• Particle X, Y, and Z each have a positive and negative charge.

Tags

NGSS.MS-PS1-1

Analyze the element box shown.

If a sulfur atom has a mass number of 32, how many neutrons are in the

atom?

Complete the statement shown below.

The sulfur atom has __ protons inside the

nucleus of its atom.

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NGSS.MS-PS1-1

Analyze the element box shown.

If a sulfur atom has a mass number of 32, how many neutrons are in the

atom?

Complete the statement shown below.

The sulfur atom has ________ neutrons inside the

nucleus of its atom.

Tags

NGSS.MS-PS1-1

A chemist is identifying the elements present in a sample of seawater.

What characteristics of an element’s atoms always determines the element’s

identity? Select 2 correct answers.

• The number of protons in the atom.

• The number of neutrons in the atom.

• The location of the valence electrons in the atom.

• The number of valence electrons in the atom.

• The atomic number of the element.

Tags

NGSS.MS-PS1-1

Analyze the element box shown.

Based on the element box shown, which property of the element

determines the identity of the element?

• The mass of the atom.

• The number of electrons in the atom.

• The number of neutrons in the atom.

• The number of protons or atomic number.

Tags

NGSS.MS-PS1-1

Analyze the element box shown.

Based on the element box shown, which property of the element

determines the chemical reactivity of the element?

• The number of electrons in the atom.

• The number of neutrons in the atom.

• The number of protons or atomic number.

• The number of valence electrons in the atom.

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

The following Bohr model represents a specific atom of an element. Analyze the diagram

and answer the following questions.

Referring to the Bohr model above, what is the atomic number that can represent the

model?

• The atom has 3 protons and therefore be atomic #33

• The atom has 3 protons and therefore be atomic #13

• The atom has 3 protons and therefore be atomic #23

• The atom has 3 protons and therefore be atomic #3

Tags

NGSS.MS-PS1-1

The following Bohr model represents a specific atom of an element. Analyze the diagram

and answer the following question.

Using the information answered above, which element is best identified from the Bohr

model?

• The atom best represents Beryllium because it has 3 protons and is atomic #3.

• The atom best represents Lithium because it has 3 protons and is atomic #3.

• The atom best represents Beryllium because it has 3 protons and is atomic #13.

• The atom best represents Lithium because it has 3 protons and is atomic #13.

Tags

NGSS.MS-PS1-1

Analyze the statement shown below.

“The atoms of a certain element each contain 1 valence electron.“

The group number of the element will be___.

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NGSS.HS-PS1-1