HRS - Ask. Learn. Share Knowledge. Logo

Questions in chemistry

[Done] A new concept that is tested in a scientific investigation is known as __________.

[Done] What do kinetic and potential energy have in common?

[Done] Apply the law of conservation of energy to explain how energy is conserved when water evaporates.

[Done] What would you be most likely to measure by immersing an object in water and seeing how much the water level rises?

[Done] When elements combine to form compounds, do their properties change?

[Done] What element is mostly used in magnets, gold or cobalt?

[Done] How can an experiment that disproves a hypothesis be useful?

[Done] How will knowing the density of a substance help you determine whether an object made from that material will float in water?

[Done] Describe and explain how petrol is separated from the mixture of hydrocarbons in crude oil.

[Done] What factors are used to determine whether a bond will be polar or nonpolar? What factors are used to determine whether a molecule will be polar or nonpolar?