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