Question 13 (1 point)     water is formed when two hydrogen atoms bond to an oxygen atom. when a substance is made of two or more atoms like this, we call it question 13 options: an element a compound. a mixture. a complex water is formed when two hydrogen atoms bond to an oxygen atom. when a substance is made of two or more atoms like this, we call it question 13 options: an element a compound. a mixture. a complex

Answer 1) : Option A) Compound

Explanation : When a substance is made up of two or more atoms which are from different elements then they are called as compound. which are chemically inseparable. But if the atoms are combining with the atoms of the same element then it is called as element.

Answer 2) : Option A) Compound

Explanation : The compound is formed when atoms from different elements and get combined to form a new substance. It cannot be easily physically separated. It can be chemically separated. A molecule is formed when two or more atoms join together chemically. A compound at least two different elements.

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !