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| A few Chemistry Questions Pleaseeee Help!!!( true or false ) THANK YOU TO ALL WHO WILL ANSWER!!!!!!!!!!!!!!!!! Energy can be converted from one form to another. Matter is anything that has mass and occupies space. Rusting of iron is a chemical property. Burning a candle is an endothermic reaction. A compound is a pure substance that can be decomposed into simpler substances by chemical means. The vertical columns of the periodic table are called groups. Nonmetals are good conductors of heat and electricity. The noble gases are not chemically reactive under normal conditions. A semiconductor (metalloid) has properties of both metals and nonmetals. Temperature is the measure of the average kinetic energy of particles in a material. Scientists use the SI system of measure. Volume is the amount of space an object occupies. The Kelvin temperature scale is used with SI units. -please answer only if you really wish to help me and are serious about knowing the answer to the question, if you are not sure about one of them please write that you are unsure |
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| Energy can be converted from one form to another. TRUE Matter is anything that has mass and occupies space. TRUE Rusting of iron is a chemical property. FALSE, it's a chemical phenomenon. Burning a candle is an endothermic reaction. FALSE, it's an exothermic one, it gives off heat and light. A compound is a pure substance that can be decomposed into simpler substances by chemical means. TRUE The vertical columns of the periodic table are called groups. TRUE Nonmetals are good conductors of heat and electricity. FALSE, they are bad conductors of heat and electricity. The noble gases are not chemically reactive under normal conditions. TRUE A semiconductor (metalloid) has properties of both metals and nonmetals. TRUE Temperature is the measure of the average kinetic energy of particles in a material. Not sure but I think it's true because heat is linked to kinetic energy of particles in a material and temperature is linked to heat. Scientists use the SI system of measure. TRUE (but they can also use other systems as well) Volume is the amount of space an object occupies. TRUE The Kelvin temperature scale is used with SI units. TRUE, the SI measuring unit for temperature is the Kelvin. I'm sorry I didn't know the answers to all your questions, but I hope they will be helpful. Good luck! Louise B. |
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