October
19
Mad Matter – How apples go brown.
Watch the clip on your class blog and explain how apples go brown – is like a car rusting.
Watch the clip on your class blog and explain how apples go brown – is like a car rusting.
cars rust because when the metal is exposed to water and oxygen it starts to rust because the oxygen will start to step electrons from the metal resulting in the metal to rust. the same thing happens to apple when the tissue inside is exposed to oxygen it starts to rust this is called oxidation
Apples going brown and cars rusting are almost the same thing. Apples go brown when their skin is peeled off or broken, and they’re exposed to oxygen. Cars rust because they are made of a metal called iron, and when iron comes into contact with oxygen and water, it will start to rust. This chemical reaction is called oxydation.
Apples go brown when water and oxygen are exposed to the apple and it turns a reddish brown, just like rust. Just like a car when a car or a paper clip are exposed to water and oxygen they will turn brown and rust.
Apples going brown is just like when iron rusts. It is when a chemical reaction called oxidation occurs. Oxidation is oxygen reacting with different materials, and these materials include iron and the tissue in fruit. Iron rusts when it is exposed to water and oxygen, and apples go brown when the skin is broken and the fruit inside is exposed to oxygen. So, apples go brown because when the fruit is exposed to oxygen, oxidation occurs and turns the fruit brown, just like rusting.
Apples go brown just like iron because of the chemicals mixed in both. There is iron in apples, just like there is iron….in iron! With iron, when the the iron is exposed to oxygen and water, it begins to rust. When the apple (PPO) is exposed to oxygen and iron it begins to go brown. The iron is contained in the apple.
Apples go brown when it has been bruised or peeled, that is called Oxidation. It is when oxygen is exposed to a material, its sorta the same when a car is rusting except its water and oxygen that make a car rust.
Apples go brown when oxygen and water are exposed to the apple it goes a browny reddish colour. Its exactly like rust on nails and cars. When oxygen and water are exposed to something it starts to rust
Apples go brown because of the same reason that cars rust. When an apple is brused or dropped, it will cut the skin therefor it will be exposed to oxygen and water, which makes metal rust. apparently this is the same reason that apples go brown. This is called oxidation. Oxidation is oxygen reacting to a certain substance which makes it crinkle up, like metal or the soft inside of the fruits tissue. It is not only apples that rust, its all kinds of other fruit, like bananas or pears.
So now we all know that apples are like iron and metal when it comes to rusting, when oxygen and water come in contact with iron and even fruit it starts to rust!
How Apples Go Brown Like A Car Rusting
An apple is like a car rusting because when they both are exposed to oxygen and water they both become brown/rust. An apple only goes brown if the skin is taken off or damaged unlike iron, if it does not have a skin it will rust, erode, or even break off. With an apple it has all ready a protective skin layer, but with iron it does not come with one so you have to put it on yourself (eg: you paint your car, this does not only look good it separates the iron oxygen so it prevents rust :D. The reason why they go brown or rust is because of the mixed chemicals inside them both this makes them be able to go brown or rust.
Why does an apple turn brown? Well the cause of this reaction is oxidation.
This reaction is when oxygen reacts differently to a material. It’s like a car.
A car is made of iron. When the iron makes contact with water and oxygen it causes rust. This is because overtime, the oxygen steals electrons from iron to form Iron Oxide. As mentioned before this causes a reaction creating an orange substance called rust.
So why does a apple turn brown and what’s does that have to do with a car? Well that’s because of an enzyme known as Polyphenol Oxide (PPO). When PPO is exposed to the Iron which is contained in a fruit, (not metal but a different type of iron), we notice that the apple turns brown. Just like how metal turns into rust. This reaction to the fruit only happens when the skin of the fruit is bruised or damaged in any way. Why? Well that’s because when the skin is damaged, ist exposes the inside (iron) of the fruit to oxygen, like said, it reacts to the fruit turning brown.
So both the cars and the fruit have iron contain either on their surface or inside the object. And both of these objects react be use of the same reason. Oxidation.
Apples go brown when air and water are exposed to it and that is what happens to a car when it rusts its called iron oxide
Apples going brown and cars rusting are both caused by oxidation. When the skin or metal on the piece of fruit or a car is broken, bruised or damaged the object is exposed to oxygen and as we all know when water, oxygen and iron are together they make rust.The tissue in apples acts the same as the metal on cars. So when all three elements are together it equals rust.
Apples going brown is the exact same as a old car rusting. What makes rust is water, oxygen and iron or steel. Once iron is exposed to oxygen and water rust will begin to take over it doesn’t come instanly. The chamical reaction is called iron oxide but that is only for the iron in cars. For the iron in fruit it’s called polyphenol oxidase which is long for ppo. Same goes for the fruit as soon as the skin is bruised or broken it will start to “rust” but it will still take time yet it is quicker then the old cars.