Halp ! 1) which of these is a chemical property of a substance? 1-reactivity 2-color 3-boiling point 4-melting point 2) which of these is true of a chemical reaction? 1-energy is always transferred from reactants to products. 2-energy is always transferred from reactants to reactants 3-energy is transferred between products and reactants. 4-energy is not transfered. 3) which of these is an example of physical change? 1-melting a substance 2-breaking chemical bonds 3-forming chemical bonds 4-nuclear decay 4) which of these is an example of a chemical change? 1-cutting bread 2-spreading peanut butter 3-digesting a sandwich 4-stirring jelly 5) which of these is an example of a physical change? 1-gasoline burning 2-metal denting 3-iron rusting 4-silver tarnishing
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Chemistry, 22.06.2019 12:50
What is the chemical name of the compound na2co3? use the list of polyatomic ions and the periodic table to you answer. a. sodium carbon oxide b. sodium carbonate c. sodium(ll) carbonate d. sodium oxalate
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Chemistry, 22.06.2019 15:00
‘which reaction would most likely require the use of an inert electrode?
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Halp ! 1) which of these is a chemical property of a substance? 1-reactivity 2-color 3-bo...
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