I think the right one is b.
Answer: law of conservation of matter states that mass in an isolated system can neither be created nor destroyed by chemical reactions or physical transformation.
thus, the mass of the reactants in a reaction must be equal to the mass of the products
Answer:
False
Explanation:
The periodic table is in order of their atomic number. If that were true, helium would not come before boron, for example.
Answer:
Water has a pH of 7 - its not acid or base (its neutral {in the middle})
Explanation:
Since the pH scale maximum number is 14, the middle number - is 7 - which is where water is
