April 25, 2014

Homework Help: Chemistry

Posted by mysterychicken on Tuesday, October 19, 2010 at 12:18pm.

I need someone to check these True or False questions for me please:

3. Dissolving salt in water is a physical change- F

14. Burning newspaper is a physical change- F

19. The liter is a measure of volume- T

20. The amount of heat and temperature of a substance are the same- F

21. Zero degrees is the freezing point of water on the Fahrenheit scale- F

23. Scientific laws can change- I was kind of stuck on this one because my text book says that "these laws can be reinterpreted" but the internet says they can't be so...F?

24. Mass is the measure of the earth's gravitational attraction- F

29. Rusting of iron is a chemical property- T

38. Scientists use the SI system of measure.- T


Answer this Question

First Name:
School Subject:

Related Questions

Chemistry - Is the following a physical or chemical separations: salt water --&...
Physical Ed - 11. Disagreements are a normal part of life. (1 point) True False ...
Chemistry - Can someone please help me with these: 3. Dissolving salt in water ...
science - Will you please check a few more? Physical change, chemical change or ...
science - Please check these! Physical or Chemical properties? 1. solubility = ...
Chemistry - Are the following physical or chemical: a. dew is dried by the sun a...
Changes in Matter - Which of the following are examples of a physical change? a)...
Chem 1411 - How would you show that dissolving table salt is a physical change?
Chem Lab - Am I right? Classify the following properties of sodium metal as ...
science - Will you please check? Physical or chemical properties 1. bitter taste...