« previous next »

Author Question: general chemistry (Read 1592 times)

itsmyluck

  • Hero Member
  • *****
  • Posts: 546
on: Feb 5, 2014
Heating removes something something from the metalic substance to make calx.
Is this a reasonable hypothesis?
How could you test the hypothesis?
Can you think of an alternative hypothesis that could also explain the observations?


Hawke

  • Hero Member
  • *****
  • Posts: 679
Reply #1 on: Feb 8, 2014
It's not a reasonable hypothesis because it doesn't contain an explanation as to why. In addition, the variables are not quantitative. We don't know how much heat, nor are we told the substance that is removed.

To test this hypothesis, you've have to heat the substance at several different temperatures to see how much heat is required. The amount of substance would have to stay constant.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

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?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Chemistry: basic skills Chemistry: basic skills
First-pass effect: (a) drugs are absorbed; (b) drugs enter hepatic portal circulation and go directl First-pass effect: (a) drugs are absorbed; (b) drugs enter hepatic portal circulation and go directl
Labeling of black cohosh: (a) front label with general health claim Labeling of black cohosh: (a) front label with general health claim
A replaceable PROM used in an older General Motors computer. Notice that the sealed access panel ... A replaceable PROM used in an older General Motors computer. Notice that the sealed access panel ...
Chemistry for Changing Times Chemistry for Changing Times
General Mathematics General Mathematics
Video: Deglutition

For a complete list of videos, visit our video library