Is mixing a peanut, pretzel and cereal mixture chemical or physical change?

When an ion with a charge of + 2 gains two electrons, it no longer is an ion. True False

Which notation represents the largest atomic radius? a. Cl b. Cl c. f d. F

18. Ca (s) + 2HNO2 (aq) + Ca (NO2) 2 (aq) + H2 (9) What type of chemical reactions is the chemical reaction described above?

How will you show the presence of water vapour in air?

Germaine wants to know exactly how acidic lemon juice is. Which of these can tell him the pH most precisely? A. pH probe B. indicator solution C. red cabbage juice D. pH paper

Do simple molecules conduct electricity? and why?

C) 2,2-dimethyl-3-heptyne how to draw

What is the difference between a solute and a solvent?

A 100 g sample of an unknown liquid absorbs 2000 j of heat energy, raising the liquid's temperature from 50 ◦ c to 70 ◦ c. what is the specific heat capacity of this liquid? no phase change took place.

How many moles are present in 1.51 x 10^23 molecules of HCl?