Why does group number 18 have the least reactive elements?

Their electron shells are the most filled and do not need to be very reactive.

They all have an odd number of protons.

They all have an even number of protons.

Which of the following statements most directly relates to Chlorine's reactivity?

Chlorine atoms have 7 valence electrons

Chlorine atoms have 17 protons in their nucleus

The average mass of a chlorine atom is 35

Chlorine atoms have 3 energy levels

Valence electron are an important part of every atom. Which of the following accurately describes valence electrons?

They are negatively charged and in the outer energy level

They are positively charged and found in the nucleus

They are electrically neutral and located in the nucleus

They are positively charged and found in the electron cloud

Group 18 on the periodic table is called the Noble Gases. Neon is a gaseous element that belongs to this group, and it is chemically unreactive and very stable. Which of the following relates to its chemical reactivity?

They have 2 electron energy levels

Which group of lists best summarizes the subatomic particles and their electrical charge?

proton, positive neutron, no charge electron, negative

proton, negative neutron, positive electron, no charge

proton, positive neutron, negative electron, no charge

proton, no charge neutron, positive electron, negative

Which statement best describes the location of subatomic particles?

The protons and neutrons are in the nucleus, while the electrons are in the cloud outside the nucleus.

The protons and electrons are in the nucleus, while the neutrons are in the cloud outside the nucleus.

The neutrons are in the nucleus, while the protons and electrons are in the cloud outside the nucleus.

The electrons and neutrons are in the nucleus, while the protons are in the cloud outside the nucleus.

Which of the following below lists the correct number of protons, neutrons, and electrons for an atom of phosphorus?

protons 15 neutrons 16 electrons 15

protons 15 neutrons 15 electrons 15

protons 15 neutrons 16 electrons 16

protons 16 neutrons 15 electrons 15

The table provides information for four elements. Based on the information shown, it can be concluded that -

nitrogen is the better insulator

When trying to identify an unknown element, a scientist determines what other elements the unknown element reacts with chemically. Which property of the unknown element determines the other elements it reacts with?

The number of valence electrons in the unknown element

The total number of neutrons in the unknown element

The total number of particles in the nucleus of the unknown element

The number of protons in the nucleus of the unknown element

Elements, Reactivity, Periodic Table

Quiz

•

Chemistry, Science

•

8th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-PS1-1, HS-PS1-1, MS-PS1-2

+4

Standards-aligned

Adriana Medrano

Used 66+ times

FREE Resource

Student preview

40 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which element is more reactive?

Magnesium (Mg)

Boron (B)

Neon (Ne)

Potassium (K)

Tags

NGSS.MS-PS1-2

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Is this at stable or reactive?

Stable

Reactive

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What decides an elements reactivity?

It's proton count

It's electron count

An elements valence electrons

The elements mass

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What determines an element's energy levels?

The electron shells

The reactivity

It's stability

Tags

NGSS.HS-PS1-1

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which element is least reactive?

Fluorine (F)

Xenon (Xe)

Hydrogen (H)

Indium (In)

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which is more reactive Helium (He) 2 or Florine (F) 9?

Helium

Florine

they are roughly the same

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which particle has a positive charge?

electron

orbital

proton

neutron

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40 questions

Which element is more reactive?

Is this at stable or reactive?

What decides an elements reactivity?

What determines an element's energy levels?

Which element is least reactive?

Which is more reactive Helium (He) 2 or Florine (F) 9?

Which particle has a positive charge?

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