A student pours a small amount of orange juice into a beaker. The poir beaker reads 3ml. The mass of the OJ is 18g. What is the density
of the OJ?

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.

Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.

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.