Day: May 17, 2023

Atoms

LI 4: We are learning to describe Atoms

Read this website and answer the following questions about atoms:

What is an atom?

An atom is made up of protons and neutrons that electron spins in orbits around the outside of the nucleus 

What is a proton?

A proton is an positively charged particle that is located in the centre of the atom in nucleus 

What is a neutron?

A neutron is a neutral. It doesn’t have a charge 

What is an electron?

An electron is an negatively charged partical that spins around the outside of the nucleus 

 Each element has a different number of protons. This is how we tell them apart. They also have different number of neutrons and electrons, but these can change. Helium has 2 protons so its atomic number is 2, it also has  1 or 2 neutrons and 2 electrons. This is different to Lithium which has 3 protons and an atomic number of 3. It also has  3 electrons and 3 or 4 neutrons. Each element has its own symbol.

                 

                

 

Fast Rust Task

Fast Rust Task

 

What 3 ingredients are needed for rust to occur.

Iron Water Oxygen from the air 

 

Write a brief paragraph explaining the rusting process (why rusting occurs)

The rusting can occur by leaving things out for too long like cars, skateboards and any other things that contain metal or have some sort of metalness on it. 

It mostly occurs in cracks of alloys and metal. 

 

How could you prevent something from rusting?

You can use Gavanize to help things from not rusting? Or you can use a coating oil, grease or even plastic.

 

Write 3 sentences explaining something new you’ve learned from this reading.

I learnt that the Harbour bridge gets painted with 3 big coats and it helps the Harbour bridge to not rust because it’s in the ocean and what’s in the ocean?…SALT! And salt makes the rusting process faster and will end up making the Harbour bridge weaker and it will eventually crumble and break down.

 

Write down any new words you found in Fast Rust or the article about rust. Make sure you learn what the word means and write down a definition you understand for each new word.

Word Definition
Corrosion A breakdown of materials due to a chemical action like rusting.
Alloy  It means metal mixed with another element to make the metal stronger or more resistant to corrosion.
Rate  How quickly something happens (Speed)
Compound  A combination of two or more elements bonded together
Corrode  It means when something is being eaten away by a chemical action (such as rusting)
Element  It just mean the simplest form of substance, which cannot be broken down

By chemicals into anything simpler  
Silhouettes  Outlines
Exposed  It means when something is not covered or not hidden from something or someone 
Rust  Its an iron oxide 
Steel  Steel is an alloy of iron and carbon with improved strength and fracture resistance compared to other forms of iron