Which of the following is a sign of a chemical change? * Change in shape
Melting from solid to liquid
Formation of a precipitate
Change in size

Amount of liquid measured in l or lm

Write the formula for the following chemicals. 7. e. trinitrogen tetraoxide a calcium phosphate f. magnesium acetate b. potassium sulfide g nickel(iii) cyanide c carbon dioxide h. silver sulfate d. cobalt(ii) chloride

Which three statements represent the benefits of performing experiments using computer simulations?