According to the law of conservation of matter, which statement about chemical reactions is true?
atoms cannot be created or destroyed by chemical reactions.
every atom destroyed in a chemical reaction must be replaced.
energy is created as atoms are destroyed in chemical reactions.
atoms are created by some reactions and destroyed by others.
Answers: 3
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Which other elements contain the same number of outer electrons as sodium
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The tendency of water molecules to stick together is referred to as a) adhesion b) polarity c) cohesion d) transpiration e) evaporation
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Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?
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According to the law of conservation of matter, which statement about chemical reactions is true?
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