physical changes
Physical Change.
Mixing two of the same substances.
fizzing, bubbling, gas, odors, a new substance always is formed once a chemical reaction takes place. but it depends on what is being reacted to determine what reaction is going to take place.
Physical Change
A physical change is a change in the physical state of a substance. An example of a physical change is water turning to ice (a solid) when frozen. Its state of matter has changed, but it is still the same substance (water).A chemical change is a change in the chemical structure of a substance(s). For example, when oxygen and magnesium react, they form magnesium oxide (a different substance). The chemical state of both the oxygen and magnesium atoms involved has changed.Equations:Oxygen + Magnesium --> Magnesium OxideO2 + 2Mg --> 2MgO
The chemical change in which a substance becomes more negative could be the ionization of the substance. Means that the substance becomes more negatively charged and that is due to it being ionized. It tends to gain more electrons in order to fill its valence shell to become a stable substance.
Chemical change.
a process that does not change the chemical composition of a substance. A change in a substance with no new substances being formed
chemical
phisical change
They are a physical change because it is not like burning where a new substance is being formed.
Yes. Rust on anything is always a chemical a change because a new substance is being formed.
Substance in the material Remain the same
Cutting iron is considered a physical change because there is not a new substance being formed. It is just changing the shape. It is still just iron.
Remember that a chemical change is anything that alters the identity or composition of a substance. So something such as color change, a solid being formed, a gas being produced or temperature changing would constitute a chemical change.
No it is not!
Cutting iron is considered a physical change because there is not a new substance being formed. It is just changing the shape. It is still just iron.
There is no new product being formed, eg. its just sugar plus water. It's not like a new substance is being formed. For example a chemical change could be Iron and oxygen, which forms something new, which is Iron Oxide. Get it?? :)