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Natural Science Exam Questions Complete with Correct Answers

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Natural Science Exam Questions Complete with Correct Answers

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Natural Science




Element - Answer -A substance that cannot be broken dwn into any other substances



Atom - Answer -Simplest unit of an element



Electrons - Answer -Have a -1 charge. Smaller than protons.



Neutrons - Answer -Carry a neutral charge



Protons - Answer -Carry a +1 charge.



Orbital - Answer -The 3D space that electrons orbit within.



Covalent bond - Answer -Bonding between atoms sharing electrons. Strongest type of bond.



Molecule - Answer -Two or more atoms held together by shared electrons.



Compound - Answer -Two or more atoms chemically being bound.

, Ions - Answer -Charged atoms



Ionic bond - Answer -Bond between two attracting charged atoms



Polar molecules - Answer -Molecules that are positive at one end, but negative at the other.



Hydrogen - Answer -Bond between water molecules



Endothermic - Answer -Reactions that require energy



Exothermic - Answer -Reactions that release energy



1 law of Thermodinamics - Answer -Matter can neither be created or distroyed



2 law of Thermodinamics - Answer -All reactions spread energy



Acid - Answer -A chemical that donates protons



Base - Answer -A chemical that accepts protons



Organic compounds - Answer -Compounds that contain carbon, such as hydrogen, oxygen, nitrogen,
sulfur, phosorphus, and metals



Carbohydrates - Answer -Made up of only combinations of carbon, hydrogen, and oxygen



Sugars - Answer -Made of carbohydrates



Starches - Answer -Made of carbohydrates.

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