Three requirements to start a fire

Which statement is true about water molecules? A. The oxygen atom has a negative charge. B. The hydrogen Adams do not share electrons. C. Water molecules move randomly around each other. D. Water molecules cannot dissolve many substances.

I'm going into 8th grade, what is a good/fun science project I could do? This question may be under chemistry but the project could be under anything.

Elements listed in vertical columns of the periodic table: have similar chemical properties have similar physical properties are metals can combine with each other chemically

State the building blocks for all the macromolecules

Which example is a way that intercellular communication occurs? A: A molecule is sent through the plasmodesmata of a plant cell. B: A molecule is transmitted from one part of a cell to another to cause a response.

A type of rock that undergoes changes because of heat and pressure

How many milliliters of a 1.25 molar HCL solution would be needed to react completely with 60 g of calcium metal Ca+2HCl - - > CaCl2 + H2

What mass of copper is required to replace silver from 4. oog ogre silver nitrate dissolved in water

What kind of bond would two nonmetals typically make?

Which statement best applies collision theory to preventing a dangerous reaction from occurring? Store the reactants together at a low pressure. Keep all sparks or flames away from the reactants. Store the reactants together at a low temperature.