EOG Review

Which is the best example of a pure substance

• peanuts

• milk

• gold

• air

Which statement best explains how periods on the periodic table are organized

• increasing atomic number from left to right

• increasing number of neutrons from left to right

• decreasing number of electrons from left to right

• decreasing atomic mass number from left to right

An ice cube is put into a heated pan. What will most likely happen to the molecules in the ice as the ice is heated?

• the molecules will begin to move slower

• the molecules will begin to move faster

• the molecules will begin to increase in density

• the molecules will begin to condense in the air

Which best explains why the total mass of the products would be less that the total weight of the reactant after a chemical reaction?

• A physical change occurred

• Atoms involved in the reaction lost mass

• Precipitates were created in the new solution

• Gases were released into the atmosphere

Which would least likely have an impact on global climate changes

• producing energy using hydroelectric plants

• producing energy using coal

• producing energy using oil

• producing energy using natural gas

Which is an example of renewable energy resource

• biomass

• coal

• gas

• oil

Which will most likely result if there is increased upwelling in a coastal area

• more aquatic life

• less nutrients in the water

• higher water temperatures

• fewer nitrates

Which best determines the health of a lake used as a source of freshwater?

• its depth and width

• its temperature and pH

• its location and depth

• its temperature and depth

A scientists finds the bones of a dinosaur.What could help the scientist determine the approximate age of the dinosaur bones?

• the birds living in the area of the bones

• the weather conditions in the area of the bones

• the kinds of trees living in the area of the bones

• the index fossils in the area of the bones

Which of these organisms is a producer in a marine ecosystem?

• fish

• gull

• algae

• worm