LESSON 1 YR 10 SCIENCE

-describe and identify the structures within an atom

-identify elements using information about the numbers of protons electrons and neutrons

DO NOWList all the things you can

remember about atoms and molecules

ATOMS ARE NOT BOHR….ING

Quick revision

Bohr- Chadwick Model Atom was mostly empty space Atoms contained Protons, Electrons and Neutrons Atoms had invisible rings of force that held these

things in place That the electrons in these rings can change

their positions when they are part of a chemical reaction.

TEENY TINY INCY WINCEY THINGS

Other wise known as ATOMS What is smaller than an atom?

Structure of an atomProtons (protons)electrons (negative)Neutrons ???? YOU TELL ME.

WHO REMEMBERS THIS?

STRUCTURE OF ATOM

Depending on their energy they are locked into a certain area in the cloud.

Electrons with the lowest energy are found in the energy level closest to the nucleus

Electrons with the highest energy are found in the outermost energy levels, farther from the nucleus.

The Atom All matter is made up of atoms. The atom is the smallest particle of a matter.

It cannot be broken down anyfurther by chemical means.

What is a molecule?

A molecule is a particle with two more atoms chemically joined together, but not necessarily of different elements. The physical particle of a compound is called a molecule.

Work sheet time. Calculating neutrons

Complete this worksheet now and finish for homework.

Fredo’s for those that can complete the WHOLE sheet correctly.

CONSERVATION OF MASSLesson 2 year 10

CONSERVATION OF MASS

What’s wrong with Harry Potter??

You can’t make something from nothing.

Why do we learn this?

THE LAW

Antoine Lavoisier'Discovered the law

The mass of a closed system must remain constant over time. Mass can not be created or destroyed only rearranged .Example:

H22 + 0 + 022 2 H 2 H2200

CONSERVATION OF MATTER EQUATIONS

Balancing equations

So we know thatwhen chemical reactions take place

chemicals are changed into new compounds.

We show this symbolically using a chemical equation.

Balance it and make it Model experiment

Aim:To understand the structure of

compounds. You will be physically balancing the equation.

Method:Each station will have a task card with a

chemical formula and a large arrow. 1.Fill in the table before you start.2.You are to make the structure of the

formula 3.Keep the formula models on separate

sides of the arrow4.Using the conservation of mass theory

try and balance the equation by building more elements .

Complete the organiser for each task

Compound Name Number of each element

NaNO3 Sodium nitrate NaNO

PbO Lead Oxide PbO