PS 04.3 Isotopes and Atomic Mass

PS 04.3 Isotopes and Atomic Mass

10th Grade

43 Qs

quiz-placeholder

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PS 04.3 Isotopes and Atomic Mass

PS 04.3 Isotopes and Atomic Mass

Assessment

Quiz

Chemistry

10th Grade

Medium

NGSS
MS-PS1-1, HS-PS1-2, HS-PS1-7

+1

Standards-aligned

Created by

Robert Fetters

Used 4+ times

FREE Resource

43 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary function of a mass spectrometer?

To measure the speed of light

To determine the average atomic mass

To calculate gravitational force

To analyze sound waves

Answer explanation

The primary function of a mass spectrometer is to determine the average atomic mass of particles by measuring their mass-to-charge ratio, making 'To determine the average atomic mass' the correct choice.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the atomic number?

The number of protons in an atom

The total number of electrons and neutrons

The number of neutrons in an atom

The total number of protons and neutrons

Answer explanation

The atomic number is defined as the number of protons in an atom. This value determines the element's identity and its position in the periodic table, making the first answer choice the correct one.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the mass number?

The number of protons in an atom

The total number of electrons

The total number of protons and neutrons

The number of neutrons in an atom

Answer explanation

The mass number is defined as the total number of protons and neutrons in an atom's nucleus. It reflects the atom's overall mass, as electrons contribute negligibly to mass.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is an isotope?

Atoms with the same number of protons but different numbers of neutrons

Atoms with the same number of neutrons but different numbers of electrons

Atoms with the same number of electrons but different numbers of protons

Atoms with the same number of protons and electrons

Answer explanation

An isotope is defined as atoms that have the same number of protons, which determines the element, but differ in the number of neutrons. This difference in neutrons results in different atomic masses for the isotopes of an element.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the atomic number represent in an atom?

The total number of protons and neutrons

The number of protons in the nucleus

The number of electrons in the outer shell

The total mass of the atom

Answer explanation

The atomic number represents the number of protons in the nucleus of an atom. This defines the element and its properties, making it the correct choice among the options provided.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the mass number of an atom?

The number of protons in the nucleus

The number of electrons in the atom

The total number of protons and neutrons

The number of neutrons only

Answer explanation

The mass number of an atom is the total number of protons and neutrons in its nucleus. This is important because it determines the atom's overall mass and is distinct from the number of electrons or neutrons alone.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is A-Z notation used for?

To represent the number of electrons

To denote the atomic mass

To show the shorthand notation of an atom's composition

To calculate the density of an atom

Answer explanation

A-Z notation is used to represent the shorthand notation of an atom's composition, indicating the element's symbol along with its atomic number and mass number, making it easier to understand atomic structure.

Tags

NGSS.MS-PS1-1

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