What can you use to test substancea for their pH value if you dont have a strip of litmus paper handy?

Which sphere of Earth includes icebergs? atmosphere biosphere cryosphere geosphere

How do we determine the age of rocks and other geologic features?

What is a substance? A. a uniform mixture that can't be separated OB. a mixture that can be separated C. a single component that can't be separated D. a single component that can be separated Undo Next

The slope of a position versus time graph represents the object's A. acceleration B. displacement C. position D. velocity

Should rare earth metals continue to be used in magnets? How come?

Friction is a force that speeds up motion between two surfaces that are in contact

Which actions are evidence that a chemical reaction has occurred? Check all that apply. A: a change in color B: the formation of a precipitate C: a clear liquid becoming cloudy D: a change in shape E: the formation of bubbles F: the formation of

Which sphere forms Earth's outermost layer? Atmosphere Biosphere Cryosphere Hydrosphere

an 100kg object traveling at 50m/s collides (perfectly inelastic) with a 50kg object initially at rest. what is the sum of the momentum of both objects prior to the collision?

A train moves at constant velocity of 50km/h. how far will it move in 0.5h?