Acids and Bases Webquest Part 1: Acids and Bases Introduction:
Go to the http://www.chem4kids.com/files/react_acidbase.html and read about acids and bases. Complete all 4 parts of
the webquest on a loose leaf piece of paper. Make sure to answer all 7 questions, data table, and reflections
questions.
1. What is an acid? What is a base?
2. How do scientists measure the strength of acids and bases? Describe this scale.
Next, we will take a look at some examples of acids and bases. Go to the
http://www.visionlearning.com/en/library/Chemistry/1/Acids-and-Bases/58 Website and learn more about the
properties of acids and bases.
3. Describe the physical properties such as taste and feel of acids and bases.
4. Give 3 examples of acids and 3 examples of bases from the pH Scale on the site. Part 2:
Understanding the pH scale: Go to the http://www.miamisci.org/ph/phpanel.html Factor website. Create a table on
your loose leaf paper with the following columns. Record the pH and other information in the chart for all 12 of the
substances.
Substance
pH
Acid, Base, or
Neutral
Color of pH paper
Color of Cabbage
Juice
Lemon Juice
Baking Soda
Aspirin
Ammonia
Milk of Magnesia
Lava Soap
Borax
Water
Lemon Soap
Vinegar
Tonic Water
Liquid Plumber
States of matter Review
Part 1 http://www.chem4kids.com/files/matter_states.html
The website has been changed on this one. The questions don’t quite match. You’ll have to search
around in the site to find the answers.
1. List the four states of matter (skip the 5th):
2. If a substance changes from one phase to another, is it still the same substance? Why?
Scroll up and click on the SOLID link on the right hand side.
3. One of the main characteristics of a solid is that they
4. Are the atoms in a solid allowed to move around much? YES NO
5. In the box to the right, draw what the atoms in a solid look like.
Scroll back up and click on the LIQUID link on the right hand side.
6. One characteristic of a liquid is that it fills:
7. Atoms in a liquid have _________ energy than atoms in a solid, so the easiest way to change a solid to a
liquid is to add _________. When changing from a solid to a liquid, there is a magic temperature for every
substance called the ________________________________________.
8. To change a gas to a liquid, you will need to lower _____________________. The
______________________________________ is the temperature when the gas becomes a liquid.
9. Sometimes a liquid can be sitting there and its molecules will become a gas. That’s called
___________________________________________.
Scroll back up and click on the GAS link on the right hand side.
10. Gases are really _____________________ and the atoms and molecules are full of
_______________________, bouncing around constantly.
11. One of the physical characteristics is that a gas can ___________________________________________.
Part 2 http://www.harcourtschool.com/activity/states_of_matter/
Click on Gas
12. Describe what you see in the beaker (the purple thing).
13. Describe what you see in the chamber (the big round thing).
14. What does the description say about the amount of space between gas molecules?
Click on Liquid
15. Describe what you see in the beaker (the purple thing).
16. Describe what you see in the chamber (the big round thing).
17. What does the description say about the arrangement of the particles?
Click on Solid
18. Describe what you see in the beaker (the purple thing).
19. Describe what you see in the chamber (the big round thing).
20. What does the description say about how the particles are arranged?
Part 3 http://www.harcourtschool.com/activity/hotplate/index.html
21. Drag each of the substances onto the hot plate. Watch what happens. At what temperature do the
substances melt, and then boil?
White:____________
Melting __________
Boiling _________
Pink: __________
Melting __________
Boiling _________
Green: _________
Melting __________
Boiling _________