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
Answers: 1
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Me puede ayudar con estas preguntas 1. diga que estudia la química orgánica explica el nacimiento bioquímicas 2. cual es la importancia de la química orgánica. 3. determine las principales características del hidrógeno, oxigeno, nitrógeno y azufre como elementos que constituyen los compuestos orgánicas. 4. elabore una tabla comparativa entre compuestas orgánicas e incaicos.
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Chemistry, 23.06.2019 15:40, thatlostgirl7740
Which functions of water in living systems would still be possible if water was not polar and did not form hydrogen bonds? check all that apply. climate regulation dissolving ionic compounds for biological reactions providing body support by exerting pressure on cell walls providing body support through buoyancy transport of nutrients within organisms temperature regulation in many organisms
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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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