Question 7 (1 point) Solid ionic compounds have very high melting points because they O a contain metallic elements. Сь Oc Od are positively charged. are made of elements that are solid at room temperature. contain charged ions that are locked tightly together. Next Page Back​

If 34.2 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 299 kelvin and 1.21 atmospheres? 2 li (s) + 2 h2o (l) yields 2 lioh (aq) + h2 (g)

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.

Which statement best explains the relationship between an area is geography and the temperature of its surface water