False. Water is a molecule made of 2 parts hydrogen one part oxygen. NOT AN ELEMENT.
False - it is a compound.
I suppose that would be a summary of a change which is not chemical. Perhaps it would be something like ice --> water
A type of Chemical weathering that happens when water interacts with minerals.
A molecular formula contains the atomic composition by element and their quantities. For example H2O is the molecular formula for water. The formula indicates that there are two atoms of hydrogen (H) and one oxygen (O) in each water molecule. Through the molecular formula molar mass can further be derived. In the case of water is 18-grams per mole.
A compound is formed when two or more other substances are combined and a chemical change takes place. Pure water would be an example of a compound.
It means a chemical/ substance, that cannot be dissolved in a liquid. An example would be starch and water, as starch is insolute when added to water.
false
For example, water reacts with zinc, releasing hydrogen, an element.
False. This is a chemical change. A physical change is, for example, when Ice melts into water. It is the same element but it is in a different form. A chemical change is, for example, when two hydrogen atoms and an oxygen atom come together to form a water molecule, thereby producing a new substance.
No, it's not, since water is not an element, it's a substance, it consists of 2 hydrogen atoms and one oxygen atom, which are elements.
Water is a chemical compound not a chemical element.
Everything tangible is at least one chemical; this includes water. Water is not an element, because it can be decomposed into oxygen and hydrogen by chemical means.
For example, water reacts with zinc, releasing hydrogen, an element.
Iron (Fe) is a chemical element, water is a chemical compound (H2O).
I'd say no. Melting just changes the physical properties. Example: A rubber ball. If you melt a rubber ball it will still be rubber, just in a different form.
FALSE
The chemical composition of water is H2O.
No it is a compound