October 18 and 20 Workperiod

ASSIGNMENT 1
1.  Write a summary of our Calcium and Water experiment.  Include the following
A. Title
B. Introduction
C. Materials used
D.  Step by step procedure
E. Observations
D. Conclusion: what did you learn?

ASSIGNMENT 2
Please read chapter 7 in your textbook.  Do questions on page 259.  Answer in complete sentences
Make notes on 7.2 and do the questions on page 271.  Answer in complete sentences.

Show the teacher your work and the teacher will make a list of students who have completed the tasks.

Calcium and Water Lab

Calcium and Water lab

Introduction:

Calcium is an alkali earth metal.  When Calcium bumps into water, it

Will cause water to fall apart.  Calcium will then join with one of the atoms of water.

Question:

What new compounds get formed?

Possibilities:  These are the combinations that we can get

1.      Calcium oxide        CaO white

2.     Calcium hydroxide    CaOH white.

3.     H2    Explosive gas

4.     O2    flammable gas

Summarize the demo

Put Calcium metal into a beaker of coldish water. 

Colour change – milky white colour

Temperature change – cold to hot.     WE CALL THIS AN EXOTHERMIC REACTION.

Bubbles came out – meaning a gas was formed

This might be hydrogen gas OR Oxygen gas.