Free Printable Lesson Closure: Polyatomic and Transition

Worksheets

Lesson Closure: Polyatomic and Transition

Total questions: 15

Worksheet time: 29mins

Name

Class

Date

In this molecule, each CARBON makes (a) bonds.

Choose from the below words

There are (a) O's in Al₂(SO₄)₃.

The properties listed are describing...

Exists as solid, liquids, and gases

Bad conductors

Low melting and boiling points

Flammable and brittle

Ionic bonds

Covalent bonds

Why do all bonds form?

so the number of protons equals the number of electrons

so an atom can become unstable

to fill the outermost energy level

Which of the following is the correct Lewis dot structure for the molecule fluorine (F₂)?

If an oxygen atom has 8 protons (+) and 10 electrons (-), what is it's charge?

O^10-

O⁸⁺

O^2-

O¹⁰⁺

What is the correct Lewis Dot Structure for ammonia NH3

(a) molecules are found in nature as pairs of two atoms of the same type covalently bonded together.

A substance which has a high melting point, conducts electricity when dissolved in water, and has a crystalline structure probably has what type of bond?

Ionic

Metallic

Covalent

Crystalline

10.

Indicate below which elements exist as diatomic molecules

hydrogen

nitrogen

oxygen

fluorine

11.

What's the name of the compound NH₄NO₃?

nitrogen hydrogen oxygen

ammonium nitrite

nitrogenous water

ammonium nitrate

12.

Ammonium and oxygen would combine to form:

(NH₄)₂O

NH₄O₂

(NH₄)O₂

NH₆O₃

13.

Avery is working on a chemistry project and needs to determine the charge of iron in the chemical formula FeCl₃ used in her experiment. What is the charge of iron?

14.

What is the formula for chromium (II) hydroxide?

CrOH

Cr(OH)₁

Cr(OH)₃

Cr(OH)₂

15.

What is the formula for Calcium Chlorate?

Ca(ClO₃)₂

CaCl₂

CCl

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Lesson Closure: Polyatomic and Transition

Total questions: 15

Worksheet time: 29mins

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