Studystack if a substance can be physically separated into its components, is it a pure substance or a mixture?

Which best explains why objects fall downward when dropped? A) The center of Earth exerts a gravitational pull. B) Earth's orbit exerts a downward force on the atmosphere. C) Most objects are heavier than the air in Earth's atmosphere.

Identify the major force between molecules of pentane. dispersion dipole-dipole hydrogen bonding ion-dipole ion-ion

How can you describe the location of vanadium (v, atomic number 23) on the periodic table? Choose all that apply. period 5, group 4 period 4, group 5 nonmetals transition metals

At what phase of the cell cycle does the genetic material double?

What uses energy from the sun?

Dominic and Eva are using the same type of stopwatches to measure the time it takes for a chemical reaction to occur. They each use the same stopwatch to measure the time.

An electronic circuit element consists of 23 mg of silicon. An electric current through the circuit adds heat at a rate of 7.4 x 10-3 J/s.

If an object sinks in water it's density is less than that of water true or false

What is the main link between water in the oceans and on land

Which of the following pairs lists a substance that can neutralize H2SO4 and the salt that would be produced from the reaction? CaOH2 and Ca (SO4) 2 LiOH and Li2SO4 NH4 and NH4SO4 NH3 and (NH3) 2SO4