Why is the science method important for experiments?

How many protons, neutrons, and electrons are present in an atom of aluminum-27?

How many electrons does a single hydrogen gain or lose in the following reaction? H 2 + O 2 → H 2 O A. Gain 2 B. Lose 1 C. Gain 1 D. No change

A certain ore is 24.3% nickel by mass. how many kilograms of this ore would you need to dig up to have 55.0 g of nickel?

This element is used to improve the conductivity of germanium. (A) K (B) Ga (C) Fe (D) Mg (E) Al

What is pH? Question 1 options: how basic a solution is how acidic a solution is the concentration of potassium ions in a solution the concentration of hydrogen ions in a solution

How are the physical and chemical properties of atoms represented on the periodic table of elements

how do we know isotopes exist?

Is albinism a dominant or recessive trait

If T = dominant, and t = recessive, what would the genotypes be?

What problem would unlimited cell growth pose for a cell