What determines the length of each period in the periodic table?

Will ice melt faster with a lot of salt added or little salt added?

You can use mole ratios and molar mass to determine the masses of substances involved in a chemical reaction. Using the periodic table, calculate the molar masses of iron oxide (Fe2O3) and aluminum oxide (Al2O3).

What is something that is not moving with respect to an observer that can be used to detect motion

Considering the following precipitation reaction: Pb (NO3) 2 (aq) + 2KI (aq) → PbI2 (s) + 2KNO3 (aq) Which ion would NOT be present in the complete ionic equation?

The atomic mass of an atom can be found by A. adding the number of protons and number of neutrons in the atom. B. adding the number of protons and number of electrons in the atom. C. adding the number of neutrons and number of electrons in the atom.

What is the difference between a root word and a combining form? List 2 examples of combining form

What is the octet rule and how does it explain the formation of ionic compounds?

Can somebody explain step by step how to solve decomposition reactions?

Which of the following statements are correct about the chemical reaction? H2 + O2 - > H2O2 versus 2 H2 + O2 - > 2 H2O? They are both balanced chemical equations. The two reactions are equivalent. The laws of thermodynamics apply to both.

What do chemists use to describe a chemical reaction