Ionic compounds are written with

cation (+ ion) first then anion (- ion)

anion (- ion) first then cation (+ ion)

When adding a subscript to a polyatomic ion, you should...

put parentheses around the polyatomic ion before adding a subscript

multiply any subscripts on the polyatomic ion by the subscript you are adding

write the new subscript next to any subscripts on the polyatomic ion

put the polyatomic ion in square brackets before adding the subscript

the no. of electrons an atom can give take or share.

the no. of electrons an atom can share.

the no. of electrons an atom can lose or gain.

the no. of electrons an group of atom can share.

What is the valency of radicle or group of atoms?

the no. of atoms in the radical.

the negative charge on the radical.

the positive charge on the radicat.

What is the valency of the Alkali metals, group 1

the number of the period it is in.

Writing Formulas

Quiz

•

Chemistry

•

10th - 12th Grade

•

Practice Problem

•

Medium

•

NGSS

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

Standards-aligned

Daithi Mac an Aircinn

Used 9+ times

FREE Resource

39 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

ammonium phosphate

(NH₄)₃PO₄

NPO₄

NH₄PO₄

NH₄₍PO₄)₃

Tags

NGSS.MS-PS1-1

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Mg⁺²,F^-1

F₂Mg

Mg₂F₂

MgF₂

MgF_-2

Tags

NGSS.HS-PS1-2

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

K⁺, O^-2

KO

K₂O

K_-2O₂

O₂K

Tags

NGSS.HS-PS1-2

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Ca⁺², O^-2

CaO

OCa

Ca_-2O₊₂

Ca₂O₂

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Al⁺³, F^-1

AlF₃

Al₃F

FAl₃

F₃Al

Tags

NGSS.MS-PS1-1

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Formula for Sodium Oxide?

NaO

Na₂O

ONa

Na₁O₁

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Formula for Potassium Sulfide?

SK

S₂K

KS

K₂S

Tags

NGSS.HS-PS1-1

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