How are physical and chemical different

Why is it important for your body to reabsorb salts, proteins and sugars through the kidneys?

Unlike earth, the gas giants are composed mainly of which elements? a. iron and nickel b. silicon and oxygen c. hydrogen and helium d. uranium and neptunium

In electroplating, how should the object that will be plated be connected in the electrolytic cell? It should be the cathode, where metal atoms are reduced to metal ions. It should be the cathode, where metal ions are reduced to metal atoms.

Write an ionic equation to show that carbonic acid, h2co3, behaves as an acid in water

How does the law of conservation of mass apply to this reaction: C2H4 + O2 → H2O + CO2? A. The equation needs to be balanced. There are fewer oxygen atoms in the equation than hydrogen or carbon. B. Only the oxygen needs to be balanced.

The elements selenium and oxygen are both poor electrical conductors in which section of the periodic table are they found

What is the mole ratio of NaOH to Al (OH) 3

What is Atomic mass A: the mass of the atom based on the mass of an atom of oxygen-16 B: the mass of an atom based on the mass of an atom of carbon-12 c: the average mass of all isotopes d: the mass of the atom based on the mass of an atom of

What are the top 2 risk Maryland faces due to climate change

Which atom has the weakest attraction for electrons in a chemical bond? (1) a boron atom (3) a fluorine atom (2) a calcium atom (4) a nitrogen atom