Usetutoringspotscode to get 8% OFF on your first order!

  • time icon24/7 online - support@tutoringspots.com
  • phone icon1-316-444-1378 or 44-141-628-6690
  • login iconLogin

chemistry

CHEMISTRY

1.
Which of the following
always
occurs when a chemical reaction takes place?
A
A gas is produced.
B
A precipitate is formed.
C
A colour change takes place.
D
A new substance is formed.
2.
Which line in the table correctly describes what happens if 1 gram of a catalyst is
involved in a chemical reaction?
Speed of reaction
Mass of catalyst left at end in grams
A
faster
1
B
unchanged
1
C
faster
0
D
unchanged
0
3.
The diagram below shows a water molecule.
Which of the following statements correctly describes this molecule?
A
Atoms held together by weak bonds
B
Atoms held together by strong bonds
C
Ions held together by weak bonds
D
Ions held together by strong bonds
O
H

H

4.
The table shows information about four compounds.
Compound
Solubility in water
Conductivity when
molten
1
soluble
conducts
2
soluble
does not conduct
3
insoluble
conducts
4
insoluble
does not conduct
Which of the following statements is correct?
A
Compounds
1
and
2
are ionic.
B
Compounds
3
and
4
are ionic.
C
Compounds
1
and
3
are ionic.
D
Compounds
2
and
4
are ionic.
5.
The formula for dinitrogen tetroxide is
A
N
2
O
3
B
N
2
O
C
NO
2
D
N
2
O
4
.
6.
The pH of a solution can be measured using
A
Benedict’s solution
B
Universal indicator
C
iodine solution
D
limewater.

You can leave a response, or trackback from your own site.

Leave a Reply

Chemistry

Chemistry

Any of the lectures posted to the website at http://engineering.asu.edu/adventure/video/. Freshman lecture series videos from the 2013-2014 and 2014-2015 academic year are posted here.
Dr William Carroll, past president of the American Chemical Society, will give a lecture at 7 pm on September 24 at Mesa Community College, entitled “Where Everything Comes From – Industrial Chemistry 101”. This lecture is highly recommended, as it will be pitched at an appropriately basic level. More information is available at https://www.mesacc.edu/calendars#/?i=1
Any TECHNICAL Seminar on the ASU campus (i.e., not career-oriented or skill-oriented), presented by any of the science or engineering departments or schools. (If you are unsure whether it is a valid seminar, ask on the ASU-101 Discussion Board. Be sure to post the title and the sponsoring department.)
WHEN must you have completed viewing the lectures/seminars?

BY NOVEMBER 25, 2015 at midnight.
ANYTHING ELSE you need to do?

YES: write a 1 page (double-spaced) summary of two of the seminars/presentations, and post them through the SafeAssign link below. Submit a Microsoft Word file, named “lname_Summary1.docx” (or “lname_Summary2.docx”). where “lname” is your last name. Include in your submission:

The name of speaker, and the date and title of lecture.
A brief summary of key points in the lecture.
What did you learn? What did you find most interesting?
How did the lecture relate to your own interests and career path?

Responses are currently closed, but you can trackback from your own site.

Comments are closed.

Chemistry

Chemistry

Any of the lectures posted to the website at http://engineering.asu.edu/adventure/video/. Freshman lecture series videos from the 2013-2014 and 2014-2015 academic year are posted here.
Dr William Carroll, past president of the American Chemical Society, will give a lecture at 7 pm on September 24 at Mesa Community College, entitled “Where Everything Comes From – Industrial Chemistry 101”. This lecture is highly recommended, as it will be pitched at an appropriately basic level. More information is available at https://www.mesacc.edu/calendars#/?i=1
Any TECHNICAL Seminar on the ASU campus (i.e., not career-oriented or skill-oriented), presented by any of the science or engineering departments or schools. (If you are unsure whether it is a valid seminar, ask on the ASU-101 Discussion Board. Be sure to post the title and the sponsoring department.)
WHEN must you have completed viewing the lectures/seminars?

BY NOVEMBER 25, 2015 at midnight.
ANYTHING ELSE you need to do?

YES: write a 1 page (double-spaced) summary of two of the seminars/presentations, and post them through the SafeAssign link below. Submit a Microsoft Word file, named “lname_Summary1.docx” (or “lname_Summary2.docx”). where “lname” is your last name. Include in your submission:

The name of speaker, and the date and title of lecture.
A brief summary of key points in the lecture.
What did you learn? What did you find most interesting?
How did the lecture relate to your own interests and career path?

Responses are currently closed, but you can trackback from your own site.

Comments are closed.

Powered by WordPress | Designed by: Premium WordPress Themes | Thanks to Themes Gallery, Bromoney and Wordpress Themes