Asked in Chemistry
What are the definitions of a physical change and a chemical 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 +...
Asked in Technology
What is seventh state of matter?
1st state of matter- solid 2nd state of matter- liquid 3rd state of matter- gas 4th state of matter- plasma 5th state of matter- Bose Einstein condensate 6th state of matter - fermionic condensate 7th state of matter- thought to be Fermionic condensate ...
Asked in Elements and Compounds
Why does magnesium chloride not conduct electricity in solid state?
An ionic compound, such as magnesium chloride, has no overall charge in its solid state and does not conduct electricity. ...