Which statement best describes an electron?

Smaller mass than a proton and a negative charge

Smaller mass than a proton and a positive charge

Greater mass than a proton and a negative charge

Greater mass than a proton and a positive charge

Which statement accurately describe the atoms of a specific element?

A neon, Ne, atom contains 10 electrons outside the nucleus and 10 protons inside the nucleus.

An oxygen, O, atom contains 8 electrons inside the nucleus and 8 neutrons outside the nucleus.

An oxygen, O, atom contains 8 protons inside the nucleus and 16 neutrons inside the nucleus.

A neon, Ne, atom contains 10 electrons outside the nucleus and 20 protons inside the nucleus.

How many protons, electrons and neutrons are present in an atom of carbon, C, with the mass of 12?

6 protons, 6 electrons, 6 neutrons

12 protons, 12 electrons, 12 neutrons

6 protons, 12 electrons, 6 neutrons

12 protons, 6 electrons, 12 neutrons

A Student drew atomic models of four atomic models. Based on the drawings, which one is the least reactive?

Neon, because it has two energy levels with eight electrons in the second level

Chlorine, because it has three energy levels with seven electrons in the third level

Gallium, because it has four energy levels with three electrons in the fourth level

Tin, because it has five energy levels with four electrons in the fifth level

Which statement best describes the position of the two elements in the periodic table.

The two elements are in the same group, with Mg just above Ca

The two elements are in the same period, with Mg the first element in the period table and Ca the last element

The two elements are side by side in the same period, with Ca to the left of Mg

The two elements are in the same group, with Ca just below Mg

Which pair of properties describe the elements in group 18

They are gases at room temperature and are stable

They have 8 valence electrons and are very reactive

They have 8 energy levels and are stable

They are gases at room temperature and very reactive.

Which statement best describes the positions of Elements J and Z in relation to each other?

Elements J and Z are part of different groups in the same period

Elements J and Z are part of the same group in different periods

Elements J and Z are part of groups next to each other in the same period

Elements J and Z are part of different groups in different periods

Which statement best describes the relationship between elements D and E?

Element D is more reactive than Element E

Element D has more valence electrons than Element E

Element D has a smaller atomic size than Element E

Evidence of a chemical reactions is anything that shows -

a change in the state of matter

Which of the following could indicate a chemical change?

All of the answers could indicate Chemical Change

identifying one or more new chemical products

Chemistry 8.5 Test Review

Quiz

•

Science

•

8th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-PS1-1, MS-PS1-2, MS-PS1-5

+4

Standards-aligned

Courtney Crosby

Used 20+ times

FREE Resource

52 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

protons

neutrons

protons & neutrons

Tags

NGSS.MS-PS1-1

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the atomic number?

number of protons

number of neutrons

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Chemistry 8.5 Test Review

52 questions

What number indicates the nucleus?

Where is most of the mass in an atom located?

What number indicates a proton?

The particles with no charge in an atom are the _______.

What is the mass number of this element?

The negatively charged particles of an atom are the ______.

What is the atomic number?

What is the mass number?

a neutron has this charge

Which statement best describes an electron?

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