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Endothermic is
Water
The candle gives off light and heat.
when energy is absorbed
A combination of two or more substances that are not chemically combined
Decrease in temperature
Oil floating on top of water
heats, up releases energy
gold
__________ is known as the universal solvent because it dissolves more solutes than any other solvent.
Water
The candle gives off light and heat.
when energy is absorbed
A combination of two or more substances that are not chemically combined
Decrease in temperature
Oil floating on top of water
heats, up releases energy
gold
In a chemical reaction, if more energy is required to make the chemical bonds than to break them apart, the reaction is endothermic, so we see a
Water
The candle gives off light and heat.
when energy is absorbed
A combination of two or more substances that are not chemically combined
Decrease in temperature
Oil floating on top of water
heats, up releases energy
gold
The fire in a fireplace is an example of an exothermic reaction. Explain what happens in an exothermic reaction.
Water
The candle gives off light and heat.
when energy is absorbed
A combination of two or more substances that are not chemically combined
Decrease in temperature
Oil floating on top of water
heats, up releases energy
gold
David watches a burning candle to determine whether a chemical reaction is taking place. Which of these observations shows evidence of a chemical reaction?
Water
The candle gives off light and heat.
when energy is absorbed
A combination of two or more substances that are not chemically combined
Decrease in temperature
Oil floating on top of water
heats, up releases energy
gold
Which of the following best describes a mixture?
Water
The candle gives off light and heat.
when energy is absorbed
A combination of two or more substances that are not chemically combined
Decrease in temperature
Oil floating on top of water
heats, up releases energy
gold
Which of the following is the best example of a suspension?
Water
The candle gives off light and heat.
when energy is absorbed
A combination of two or more substances that are not chemically combined
Decrease in temperature
Oil floating on top of water
heats, up releases energy
gold
A compound is a substance that can be broken down into simpler substances and is made from atoms of two or more elements. Which of the following is not a compound?
Water
The candle gives off light and heat.
when energy is absorbed
A combination of two or more substances that are not chemically combined
Decrease in temperature
Oil floating on top of water
heats, up releases energy
gold
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