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 187 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
:D TYSM

Laurenleakan

  • Member
  • Posts: 309
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Herbivores must overcome the wide variety of physical and chemical defences evolved by plants. Herbivores must overcome the wide variety of physical and chemical defences evolved by plants.
Chemical bonds Chemical bonds
The chemical structure of mescaline, derived from the peyote cactus The chemical structure of mescaline, derived from the peyote cactus
Radiative forcing expresses change in energy input over time Radiative forcing expresses change in energy input over time
Results of Mendel’s crosses using pea plants. The numbers represent the F2 plants showing a given ... Results of Mendel’s crosses using pea plants. The numbers represent the F2 plants showing a given ...
The Ames test for potential mutagenicity of chemical compounds The Ames test for potential mutagenicity of chemical compounds
Video: Glycolysis Animation

For a complete list of videos, visit our video library