This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A chemical change results in A) new atoms. B) a physical change. C) new materials. D) a new ... (Read 165 times)

ghost!

  • Hero Member
  • *****
  • Posts: 560
on: Jul 29, 2018
A chemical change results in
 
  A) new atoms.
  B) a physical change.
  C) new materials.
  D) a new phase.

Question 2

A sample of iron weighs more after it rusts because
 
  A) it has expanded into a greater volume.
  B) rust contains twice as many iron atoms.
  C) of the additional oxygen it contains.
  D) Wrong. Iron actually weighs less after it rusts.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

trampas

  • Sr. Member
  • ****
  • Posts: 320
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: C

Answer to Question 2

Answer: C


ghost!

  • Member
  • Posts: 560
Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

xiaomengxian

  • Member
  • Posts: 311
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Did you know?

Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

The organic compounds from which most cellular materials are constructed: the ABCs of biochemistry The organic compounds from which most cellular materials are constructed: the ABCs of biochemistry
Change in Drawing Abilities from Early to Middle Childhood Drawings become more realistic as fine m Change in Drawing Abilities from Early to Middle Childhood Drawings become more realistic as fine m
The U.S. military uses its own marking system to identify explosive hazards (left), chemical hazards ... The U.S. military uses its own marking system to identify explosive hazards (left), chemical hazards ...
A Change of Heart A Change of Heart
Atoms Atoms
The Meselson–Stahl experimental results The Meselson–Stahl experimental results
Video: Role of ATP in muscle movement

For a complete list of videos, visit our video library