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Chemistry Practice Questions and Answers (Q&A)

Mrsbumgarner
Answered: Jun 05, 2020
Different than the properties of the reactants.

1 Answer

219 views
Mrsbumgarner
Answered: Jun 05, 2020
Covalent bond.

1 Answer

218 views
Mrsbumgarner
Answered: Jun 05, 2020
Covalent bond.

1 Answer

216 views
J.holian
Answered: Dec 17, 2019

This is incorrect, Strontium has 2 valence electrons.

3 Answers

215 views
Nickstauffer
Answered: Jun 05, 2020
A phase change must occur

1 Answer

214 views
John Adney
Answered: Sep 01, 2017

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

2 Answers

212 views
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

2 Answers

208 views
John Smith
Answered: Jun 05, 2020
True

1 Answer

207 views
John Smith
Answered: Jun 05, 2020
Answers will vary. suggested answers include: fortification of math skills, helps understand cooking, cleaning, environmental issues, and medicine, helps understand the functioning of the human body...Read More

1 Answer

206 views
John Smith
Answered: Jun 05, 2020
C and F

Positive ions have lost one or more electrons. When an ion loses an electron the ion has more protons than electrons and pull the electron clouds closer to the nucleus. Negative...Read More

1 Answer

204 views
Koztm
Answered: Jun 05, 2020
Fr, Hg, As, Cl, F

1 Answer

204 views
Mrsbumgarner
Answered: Jun 05, 2020
Covalent bond.

1 Answer

203 views
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

2 Answers

202 views
John Smith
Answered: Jun 05, 2020
1900

When multiplying or dividing numbers the answer will have the same number of significant digits in it as the number being multiplied or divided with the least number of significant...Read More

1 Answer

201 views
John Smith
Answered: Jun 05, 2020
15%

Percent error = [(experimental value - accepted value)/accepted value] x 100%

1 Answer

201 views

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