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Chemistry Practice Questions and Answers (Q&A)

C. Bernthal, Teacher
Answered: Jan 17, 2019
The answer to this is A. A polar covalent bond is present in the water. This is a type of bond wherein the different electrons are closer to the oxygen nucleus as compared to the hydrogen...Read More

3 Answers

C. Perez, Writer
Answered: Aug 01, 2019
The correct answer to this question is A, 2. Strontium is a chemical element. It is metal, which is soft and silver. Strontium has several uses. One important use is that it blocks X-rays that TV...Read More

3 Answers

Chris Kenway, Content Writer
Answered: Oct 04, 2018
The answer to this is B. A Compound. A compound is composed of two or more atoms depending on the two elements that are mixed together in order to mix it. These elements are pure which means that...Read More

2 Answers

J.Barbara
Answered: Mar 07, 2018
All metals are conductors of electricity, however, each type of metal has different conductivity level, and thus, some are more conductive than the other. For example, the Copper metal is one of...Read More

2 Answers

F.Brian
Answered: Jan 28, 2018
A few properties distinguish something to be a heterogeneous mixture. Included in this are mixtures that do not evenly mix, have more than one phase, particles are not uniformly distributed, and...Read More

2 Answers

J.holian
Answered: Dec 17, 2019

This is incorrect, Strontium has 2 valence electrons.

2 Answers

L. Brett, Sales Manager
Answered: May 29, 2019
Electrons are the particles that have a negative charge. Protons are the particles that have a positive charge. There are also neutrons which have a neutral charge. A lot of these particles are...Read More

1 Answer

F.Brian
Answered: Jan 19, 2018
The chemical formula Fe2(SO3)3 indicates nothing above. Chemical formulas are used in chemistry to refer to compounds and elements. There are various different types of compounds, having...Read More

1 Answer

John Adney
Answered: Sep 01, 2017

Isn't an element only one single atom? And a compound more than one?

1 Answer

A is the right answer. Alpha radiation or alpha particles contain two neutrons and two protons that are also known as the helium-4 nuclei. Due to their combined mass and their charges, they have...Read More

1 Answer

C. Lopez, Chauffer
Answered: Apr 04, 2019
The answer to this is D. The given description can be associated with group number 16 in the periodic table. This group is also known as chalcogens. There are a lot of people who are familiar...Read More

1 Answer

John Adney
Answered: Nov 26, 2017
I can see how the digestion of food involves a chemical change as the food that was once solid is dissolved by the stomachs acid. However, boiling water also undergoes a chemical change as the...Read More

1 Answer

John Smith
Answered: Jan 24, 2020
Radium (Ra)

1 Answer

Mohit singh
Answered: Nov 19, 2017

Why different than the properties of reactant please define me why is it or not others?

1 Answer

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