Wednesday, December 2, 2009

Calcium in Water (Lab Report)


purpose: To examine the reaction of calcium and water

hypothesis:
Calcium will react very violently in water and sounds will be heard (i.e. pop, boom, etc.) This is because calcium is an alkaline earth metal, ad the metals in that family are highly reactive in water. Hydrogen and oxygen will be released because those are the only gases there and that metals are 'lost' from the experiment during my Mn+H2O2 experiment.

Variables:
-controlled: relighting flames (O2) + squeaky (H2)
-independent: calcium
-dependent: save size beakers
-how to measure dependent: use a test tube to capture the gas.

method: use the BC science 9 method on page 97.

results: see left picture

Sentence:
A white mysterious solid appears at the bottom of the beaker.

Evaluation:
- problem 1: collecting gas
- problem 2: catch calcium

Solution: - use a different method.
- use 2 smaler pieces of calcium

Questions #1 and 2

1. What changes have I observed? I observed a white solid at the bottom of the beaker and the liquid changing from green to purple due to the universal indicator.

2. What gas was produced? Hydrogen and oxygen gas was produced.

Conclusion: Hydrogen, oxygen, a white solid and a base is made. (Ca +H20 = CaOH)

_____________________________________________________________________________________

P.S. : This may sound unbelieveable, but since my antivirus reported that my computer had viruses, I was worried about the dangers of using an infected computer. Therefore, I had to use another computer which had no firefox to create this blog. That was why there was no subscripts and superscripts in the names of chemicals.

In conclusion, please disregard the lack of subscripts and superscripts.

Wednesday, November 11, 2009

My Element song lyrics

Title: School's element song

(Sing this the way you sing wheels on the bus)



We use argon for electric bulbs
House light bulbs, house light bulbs
We use neon for coloured light signs
Decoration

Sodium is part of table salt
Table salt, table salt
We drink calcium for our teeth
For our teeth

Copper is found in diamonds
Diamonds, Diamonds
Lead is supremely poisonous
But used in pipes

White phosphorus glows in the dark
In the dark, in the dark
Bromine is widely used for films
And for photos

We have oxygen for unseen air
unseen air, unseen air
We also have nitrogen for air
All for our lives.

This song sounds like one that you might hear
wheels on the bus, wheels on the bus
Each 2 lines describe an element
Certainly right

Thursday, November 5, 2009

Bohr model of the first 20 elements



Due to the technical limitations of my software, I will list the number of protons and neutrons of elements 2-20.

Element 2 (Helium): 2p 2n
Element 3 (Lithium): 3p 4n
Element 4 (Beryllium): 4p 5n
Element 5 (Boron): 5p 6n
Element 6 (Carbon): 6p 6n
Element 7 (Nitrogen): 7p 7n
Element 8 (Oxygen): 8p 8n
Element 9 (Flourine): 9p 10n
Element 10 (Neon): 10p 10n
Element 11 (Sodium): 11p 12n
Element 12 (Magnesium): 12p 12n
Element 13 (Aluminum): 13p 14n
Element 14 (Silicon): 14p 14n
Element 15 (Phosphorus): 15p 16n
Element 16 (Sulphur): 16p 16n
Element 17 (Chlorine): 17p 18n
Element 18 (Argon): 18p 22n
Element 19 (Potassium): 19p 21n
Element 20 (Calcium): 20p 20n

Monday, October 26, 2009

My "Grocery Store"




Here is my fake "Grocery Store".

Each row is organized by lightest to heaviest (in general).
Each column is organized by groups AND in lightest to heaviest (again, in general).
Words in brackets denote amounts whether in approximate or specific.

The legend for the colour-coding is obviously on the top of this blog:


Note that my shop's racks are screwed up,
but since this mart is imaginary, that is
fine.

Weight Mart (the name of my store)

Slide 1
Pc
Paper
Cups










Ol
Olives
Kl
Kleenex
Pa
Pasta






Or
Orange
Su
Sugar
Sh
Swiss
Cheese
On
Onions
Pp
Paper Plates
Ce
Cereal






Ap
Apple
So
Sodas (Approx
500 mL)
Cc
Che-
ddar
Cheese
Gb
Green beans
Pt
Paper
Towels
Sb
Sandw-
Ich bread
Fc
Frozen
Chicken
Wings
Ke
Ketchup
Te
Tea
Ju
Juices
Cm
Cake mix
Ba
Banana
Cr
Cream
(500 mL)
Mo
Mozza-
rrela
Le
Lettuce
Bp
Baking
Powder
Fb
French
Bread
Fp
Frozen
Pork
Mu
Mustard
Co
Coffee
Ko
Koolaid
Mm
Muffin
Mix
Av
Ava-
cado
Ch
Cheesecake
Bu
Butter
Cn
Corn
Tp
Toilet
Paper
Pb
Pita
Bread
Fd
Frozen
Dinner
Beef
Sj
Straw-
Berry jam (2L)
To
Tortillas
Ap
Apple
pie
Pm
Pan-
cake
mix
Lj
Lemon
Jam
Sc
Sour
Cream
(2L)
Mi
Milk
(4L)
Br
Broccoli
Dg
Deter-
gent
Ri
Rice
(in packs)
Pe
Peanut
Butter









Wednesday, October 21, 2009

"What did you find out?" p.43


These are the answers to p.43 "What did you find out?"

1. The elements that conduct electricity are usually metals.
2. The elements that conduct electricity are usually nonmetals.
3. I would place every element that conducts electricity and/or is magnetic in the metal group. I would place every element that does not conduct electricity and is not magnetic in the non-metal group.