Friday November 20, 2009: Quiz 8

Thanks to everyone for emailing in your answers to Quiz 8. For those of you who sent them in last night, I did receive them!

I’ll have your grades posted on MyGradeBook.com sometime this evening after I’m done grading (and after the big Asheville Holiday Parade today!)…

Quiz 8: Density, Energy, and Gases
Physical Science 8
November 20, 2009
Mr. Harrelson

It is the year 2024.

You are 28 years old.

You have just finished your doctoral thesis on high energy physics at M.I.T. and have accepted a position at Stanford University where you’ll be teaching graduate level physics and continuing your research on Calabi-Yau manifolds.

Mr. Harrelson is 47 and has been called upon by NASA to travel to the moon for an expedition to search for boron and squirrellium. He must leave the Fall semester early to begin his arduous training. However, he still has Fall exams to give to his students at Spartanburg Day School.

So, Mr. Harrelson gives you a video call and asks you to come give his Fall Exam at Spartanburg Day School to a group of 8th graders…

–

You’re assignment for this quiz is to compile the information you’ve gathered these past 10 days on volume, density, the types of energy and gas laws and come up with two possible exam questions (and their possible answers). You must turn this in at the end of the class session today.

Your grade will be determined on how well I can discover what you’ve learned from our studies of this material.

Ch. 7 Review

Here is the Pop-Review Quiz we did in class today (click).

Remember, our 50 POINT test on Chapter 7 is tomorrow!

QUESTION 1
Which is not a type of mixture?
Solution
Colloid
Acid
Suspension

QUESTION 2
Sugar water is an example of a:
suspension
solution
solute
colloid

QUESTION 3
Ammonia is an example of a(n):
acid
base
salt
antacid

QUESTION 4
Acids produce __________ in water.
hydroxide ions
pH scale
solute
hydrogen ions

QUESTION 5
HCl is a common ________.
acid
base
salt
solution

QUESTION 6
Milk is a good example of which type of mixture?
acid
solution
base
colloid
suspension

QUESTION 7
A base produces ____________ in water.
hydroxide ions
salts
hydrogen
hydrogen ions

QUESTION 8
The names of acids normally end in _______.
-ide
-ice
-ixe
-ic

QUESTION 9
When acids react with magnesium, zinc and iron, _________ is produced.
salt
hydrogen gas
hydrogen ions
hydroxide ions

QUESTION 10
Salt is any compound that is made from the __________ of an acid with a base.
solubility
solution
reaction
neutralization
precipitation

7.3 Describing Acids and Bases

Here is the notesheet from today’s class on section 7.3 on acids and bases (click).

Remember, your homework (due Monday) is 7.3 Section Assessment #1-2 on page 241.

1. What is an acid?
2. What are some common acids?
3. Acids taste a certain way… how do they taste and should you use that property to identify acids?
4. What does it mean to say that an acid is corrosive?
5. Which gas forms when an acid reacts with zinc, magnesium or iron?
6. What are the properties of a base?
7. What are three common bases?
8. Please give one safe way to identify a base.
9. What vitamin is an acid?
10. Which acid is used to clean bricks and metals?
11. Why is baking soda used in baking?
12. Drain cleaners are very potent materials. What substance do they contain and is it an acid or base?
13. Which substance is used to make fertilizers?
14. Where is folic acid found?

Also, check your grades over on http://www.mygradebook.com!

Grades Posted

Your up-to-date grades for the 2nd quarter are posted over on http://www.mygradebook.com, so head over and see how you currently stand in the class.

You may also want to look at the “Future Assignments” section as there may be a surprise very soon (as in tomorrow)…

Practice Test Tomorrow

Tomorrow in class we’ll have the laptops and take a practice test online!

I’ll have the practice quiz online here first thing in the morning and it will be online afterwards to help you study and prepare for Test 1 (Thursday-Friday).

Start reviewing your notes now!

Thursday September 24, 2009: Quiz 5

Today, we took Quiz 5 on Ionic and Covalent Bonds via the http://www.mygradebook.com site. The “retest” will be posted tomorrow morning and you’ll have until tomorrow night (Friday) at midnight to complete that if you’d like.

You can also head over to MyGradeBook and look at your grades and what assignments you’re missing if you haven’t done so already.

Quiz 5 in Word Format

Quiz 5 in PDF Format

Quiz 5 as a Web Page

Quiz 4: Element Design

Today in class, we started Quiz 4 (Metals, Nonmetals and More on Periodic Table).

Here are the steps to completing the quiz:

1. Invent an element (be creative) that does not exist. The element must not have an atomic number that already exists (so, above 114).
2. Give details of the the 8 areas below about your element.
3. Draw your atom’s periodic table square. The element must not have a chemical symbol that already exists.
4. Be creative (color, concept, details, neatness)
5. Please use complete sentences with proper punctuation and grammar!

• Atomic Mass (number of protons and neutrons)
• Atomic Number (number of protons)
• Metal or Non-metal (solid, liquid or gas… or a mixture)
• Characteristics (color, chemical and physical properties)
• Chemical Symbol
• Isotopes
• In which Group is the element located?
• How many electrons are needed to be stable? (page 130 in your book if a nonmetal)

The quiz is due by the end of class tomorrow.

Again, make sure that all of your math adds up (atomic number / atomic mass) and that you have all the details correct!

Your grade will be determined by your attention to details like if your element is in the right group, has the appropriate characteristics, etc.

Quiz 2 Tomorrow in Class!

Remember, Quiz 2 is tomorrow in class!

What should you study?

1. I would take a look at the note sheets we did in class on Monday and Tuesday.

2. I would review this week’s homework questions as quiz questions often come straight from there!

3. I would think back on the types of questions we had in today’s practice quiz.

Questions? Email me, call me or see if I’m online for chat help.

Good luck and have a great night!

Quiz 2 Alpha (Today's Practice Quiz)

1. Which of the following is NOT an isotope of the element hydrogen?

deuterium – Incorrect
tritium – Incorrect
protium – Incorrect
bohrium – Correct

2. The amu of an electron is:

1 amu – Incorrect
2 amu – Incorrect
10.6 amu – Incorrect
1/1836 amu – Correct

3. Who developed the first model of the atom that included smaller particles?

JJ Thomson – Correct
John Dalton – Incorrect
Democritus – Incorrect
Ernest Rutherford – Incorrect
A Furry Squirrel – Incorrect

4. Rutherford’s model of the atom resembled which of the following?

A Peach – Correct
A Muffin – Incorrect
A Pool Ball – Incorrect
A Cloud – Incorrect
An Onion – Incorrect
Squirrels – Incorrect

5. Which of the following parts of an atom did Rutherford discover in his experiment

The Nucleus – Correct
Electrons – Incorrect
Electron Orbits – Incorrect
Electron Clouds – Incorrect
The Squirrel Particle – Incorrect

6. Thomson’s model of the atom resembled which of the following?

A Squirrel – Incorrect
A Peach – Incorrect
A Muffin – Correct
An Onion – Incorrect
A Cloud – Incorrect

7. Who developed the model of the atom that resembled a pool (billiard) ball?

John Dalton – Correct
JJ Thomson – Incorrect
Ernest Rutherford – Incorrect
Niels Bohr – Incorrect
Squirrel Maximus – Incorrect

8. What was Rutherford’s famous experiment called?

Type Multiple Choice (random answer order) Answers
Gold Foil Experiment – Correct
Electron Cloud Experiment – Incorrect
LHC – Incorrect
Weak Force Experiment – Incorrect

9. Who’s model of the atom resembled an onion and first included electron orbits?

John Dalton – Incorrect
Ernest Rutherford – Incorrect
Niels Bohr – Correct
Mr. Perkinson – Incorrect
JJ Thomson – Incorrect

10. Is a nucleus positively or negatively charged?

Negative – Incorrect
Positive – Correct

11. Who said “All atoms of the same element are exactly alike and have the same mass. Atoms of different elements are different and have different masses.”

John Dalton – Correct

12. An isotope is identified by its _________________.

Mass Number – Correct
Number of Electrons – Incorrect
Number of Atoms – Incorrect
Atomic Number – Incorrect
Numbers of Squirrels – Incorrect

Grades, Comments, Etc

Just as a reminder, all of your grades for Quiz 1 last week (including the homework) are posted up on our class gradebook. You can login with your info and check your grade to see where you stand.

I’ve also started posting up daily notes about most of you, so login to see what I have to say if you’re curious!