the smallest unit of an element

protons, electrons, and neutrons

elements with the same number of protons but have different numbers of neutrons.

elements with the same number of neutrons but have different numbers of electrons

elements with the same number of electrons but have different numbers of protons.

If a proton is added or removed from an atom, what happens?

It becomes a different element.

It becomes a different isotope.

What is the difference between Neon-20 and Neon-22?

They have different numbers of neutrons.

They have different numbers of electrons.

What does the atomic number represent?

the number of protons in the nucleus of an atom

the number of neutrons in the nucleus of an atom

the number of protons and neutrons in the nucleus of an atom

the number of electrons in the energy levels outside of the nucleus

Why are atoms electrically neutral?

Protons and electrons are equal, thus cancel each other out because they have opposite charges.

The neutrons balance out any charge.

There are more neutrons than protons or electrons.

Neutrons have no charge which makes the who atom neutral.

What do these isotopes of carbon all have in common?

atomic number, electrons, and valence electrons

protons, atomic number, and mass number

Compare the number of electrons in a Chlorine-35 and Chlorine-37 isotope.

Chlorine-35 has 17 electrons and Chlorine-37 has 19 electrons

Chlorine-35 has 17 electrons and Chlorine-37 has none

Chlorine-35 has 35 electrons and Chlorine-37 has 37 electrons

Atom A has an atomic number of 19 and mass number of 40. Atom B has an atomic number of 20 and a mass number of 40. Which of these is an accurate statement.

Atom A has one less proton and one more neutron than Atom B

Atom A has more protons than Atom B

Atom A has an extra neutron compared to Atom B

Atom A has one more proton and one more neutron than Atom B

Which statement best explains how periods on the periodic table are organized?

increasing atomic number from left to right

increasing number of neutrons from left to right

decreasing number of electrons from right to left

decreasing atomic mass number from left to right

What property do the following elements have in common? F, Cl, and Br

same number of valence electrons

They form anions (negative ions)

SPS1 Practice Test

Authored by Aisha Holloway

Science

9th - 12th Grade

NGSS covered

Used 3+ times

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50 questions

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

What number indicates the nucleus?

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which two particles make up the nucleus of an atom?

Protons and Electrons

Protons and Neutrons

Molecules and Compounds

Neutrons and Electrons

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

_____ are the basic units of matter and the defining structure of elements.

Atoms

Compounds

Elements

Molecules

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

_____ are the basic units of matter and the defining structure of elements.

Atoms

Compounds

Elements

Molecules

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which subatomic particle has a positive charge?

Electron

Neutron

Valence electron

Proton

Tags

SPS1a

MULTIPLE CHOICE QUESTION

1 min • 1 pt

An atom that has become charged by gaining or losing electrons.

Ion

Isotope

Electron

Valence Electron

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of these is the proton.

None

Tags

NGSS.MS-PS1-1

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SPS1 Practice Test

What number indicates the nucleus?

Which two particles make up the nucleus of an atom?

_____ are the basic units of matter and the defining structure of elements.

_____ are the basic units of matter and the defining structure of elements.

Which subatomic particle has a positive charge?

An atom that has become charged by gaining or losing electrons.

Which of these is the proton.

Which of these is the electron?

What are atoms?

What is an isotope?

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