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Q: When a substance gives off or absorbs heat is that a sign that describes a sign of a chemical change occurring?
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Related questions

What describes the behavior of a substance during a phase change?

It either absorbs or releases energy


What type of chemical bond when a substance is dissolved in water absorbs energy from the surrounding water?

ionic bond


Is a bloom is a substance that absorbs light?

a bloom is a substance that absorbs light


Why is chlorophyll important?

Chlorophyll is a chemical in chloroplasts which exists in palisade cells in leaves. Chlorophyll is the substance that absorbs sunlight which is essential for photosynthesis.


Which term describes substances that absorb some wavelengths of light?

Pigment is a substance that absorbs some wavelengths of lights and reflects other, giving something its color. Chlorophyll is the green substance that absorbs light and provide energy for photosynthesis.


What is the substance that absorbs and releases heat in a cooling system?

A refrigerant is a substance that absorbs and releases heat in cooling systems.


A substance that absorbs light?

Pigment :|]


How can you tell if a substance is hygroscopic?

If the substance absorbs water like crazy.


What happens when a substance absorbs light?

When a substance absorbs light the wavelengths that correspond to that color cannot be seen. Only colors that are reflected are visible.


Is there a chemical that absorbs the chemical mercury?

Mercury, or quicksilver, is highly toxic and can be easily absorbed through human skin. There is no known chemical that absorbs mercury.


What type of chemical absorbs energy?

The two kinds of chemical reactions are endothermic and exothermic. A chemical reaction that absorbs energy is called an endothermic reaction.


When a substance melts or boil it absorbs what?

Heat.