What is Matter?
The 5 states of Matter.
In our first lesson of science, we learned about Matter and what it is. Matter is something that forms everything together. For example, every object around you, and anything that takes up space is Matter. Matter is made up of substances called elements, they are made up of atoms. In fact, everything is made up of atoms! Atoms are a measurement of elements All matter has volume and weight. Matter can’t be seen if it is a gas. Air is matter.
Mass and weight are 2 different things because Mass is something that takes up space and weight is how heavy or light an object is. Your weight can change depending on where you are. In space you are so much lighter!
There are 5 states of Matter. Solids, Liquids, Gas’, Plasma which is %99 in the universe, and Rubidium (Bose Einstein condensates) which was made in 1995 and is 300 degrees Celsius. Liquid can evaporate to a gas. Solids has Mass, a definite volume, a definite shape and they are tightly packed which helps them to hold their shapes. Liquid has Mass, a definite volume, no definite shape so they will take the shape of the container, and they are further apart so they can move around. Gas has Mass, no definite volume, no definite shape but will take the shape of its container, and the atoms in Gas are far apart. States of Matter change from temperature. Anything you can touch is Matter.
Matter. Atoms. The difference between Mass and weight. Volume.
Chemical and Physical Change.
In our second lesson of science, we learnt about physical and chemical change. Physical change is where nothing new is formed, but it might look or feel different. A substance changes it’s physical form but still retains it’s original properties.
Chemical change is where something new is formed- e.g. a solid from 2 liquids. It might be a gas made- Seen by fizzing or bubbling. Might be a colour change. Might produce heat, light or odour. A chemical change is when 2 substances are mixed together to form something new.
In lesson 3 we are going to do 12 experiments that take up 7 minutes, so, also in lesson 2 we learnt about the safety precautions. The test tubes are very thin glass, keep them in the test tube when not being looked at. When inserting the thermometer do not touch the bottom of the test tube. Measure the temperature of the liquid above the bottom.
Working with liquid… At any workstation that provides safety glasses, all students must wear them to protect your eyes from any chance of splashing.
Flick mix… Use your fingernail to tap against the tube. Always have the mouth of a test tube pointing away from your face.
How to read Meniscus (The curve in the upper surface of a liquid caused by surface tension.