Blog Archives

September 27th, 2013

27/9/2013

Today we answered the questions from the Chapter on The Atom (finish for HW).

We then looked at examples of Ionic and Covalent Bonding.

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September 26th, 2013

26/9/2013

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Started Chemistry - The Atom.

An Atom is the the smallest part of an element which still maintains the properties of that element.

We learned also that:

Protons are found in the nucleus, have a positive charge and a mass of 1 atomic mass unit.
Neutrons are found in the nucleus, have no charge and a mass of 1 atomic mass unit.
Electrons are found orbiting the nucleus, have a negative charge and a mass 1/1840 atomic mass units.

HW - Draw Bohr Models of Boron, Sulfur and Argon atoms.

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September 24th, 2013

24/9/2013

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Definition test.

Definitions for next week on Light and Sound (click here).

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September 20th, 2013

20/9/2013

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Class team science quiz.

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September 19th, 2013

19/9/2013

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Today we read through the chapter on Microbiology.

HW: p.145 Q.7, 12 & 13

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Wrote up Photosynthesis experiment.
Set up Photo-tropism and Geo-tropism investigations.

Started Chapter 16 on Micro-organisms.

A Micro-organism is a small living thing such as a bacteria, fungus, protist or virus.

Micro-organisms can be killed by

Very hot or cold conditions
Strong acids or bases
Drying out this can be done with salt or sugar
Depriving them of oxygen

HW - Ch. 16 Q.2 and 4

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September 12th, 2013

12/9/2013

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Tropisms - plant responses.

Geo-tropism - Plant response to gravity. Shoots grow up and roots grow down.
Photo-tropism - Plants grow towards light.