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 102 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
Gracias!

mcabuhat

  • Member
  • Posts: 344
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

Did you know?

The human body produces and destroys 15 million blood cells every second.

Did you know?

The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Tracking atoms through photosynthesis. Tracking atoms through photosynthesis.
Inspecting a patient’s ear during a physical examination. Inspecting a patient’s ear during a physical examination.
Monitoring and Following Up on Laboratory Test Results Monitoring and Following Up on Laboratory Test Results
The Revolutionary Change in the U.S Workforce The Revolutionary Change in the U.S Workforce
Elaboration Likelihood Model of Attitude Change Elaboration Likelihood Model of Attitude Change
The Global Impact of Climate Change The Global Impact of Climate Change
Video: Introduction to Autism

For a complete list of videos, visit our video library