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What clues could tell you if a chemical change has occurred in a substance?
Wiki User
∙ 10y ago
Wiki User
∙ 13y agoChemical reactions display the following clues :
- The change is not reversible
- Phase changes : gas released, or liquids and solids formed
- Color or other change in appearance
- Heat or light produced, or heat absorbed
THESE CLUES MAKES SENSE!!! from my sir...(QUICK ANSWER)
- TEMPERATURE CHANGE
- COLOR CHANGE
- PROPERTY CHANGE
- PHASE CHANGE
Wiki User
∙ 13y agoChemical reaction clues :
- The change is not reversible
- Phase changes : gas released, or liquids and solids formed
- Color or other change in appearance
- Heat or light produced, or heat absorbed
Wiki User
∙ 13y agoFormation of a solid
Release of heat
Wiki User
∙ 10y agoit may include the relaease of heat and light,a change of color,a new smell,gas bubbles or the formation of the solid
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What are three clues that a chemical change has occured?
Three clues that a chemical change has occurred:Color changesa precipitate formsa gas forms
What are 5 clues that a chemical change as taken place?
These are the clues to tell if it's a chemical change or not1. Change in color 2. Energy change (cools, heats, light, sound)3. Gas production4. Odour change5. Precipitate production (eg. 2 liquids forming a solid substance)
What is four possible clues to chemical change?
change in temperature, change in color, formation of a gas
Why is Wood burns to form black charcoal a chemical change?
It changes properties.Physical Changes:Physical changes are changes in the appearance but not in the chemical properties. Some physical changes can be undone so the item can be put back to almost its past form.Chemical Changes:Chemical changes are the changes in chemical properties. Chemical changes also change in appearance and/or leave behind traces to prove that a chemical change occurred. Chemical changes create a new substance when they happen, e.g., cooking an egg. Chemical changes cannot be undone as the molecules, patterns and properties have been changed.How to tell them apart:The way to tell the difference between chemical and physical changes is by the changes that it went through. There may be clues that a chemical change appeared because of sound, light, gas production or an odour. A physical change does not involve any of these.
Difference between physical and chemical changes?
A chemical change results in the formation of a new substance. Example: igniting hydrogen in oxygen produces water. You can use these clues to determine a chemical change has occured: a colour change, a change in temperature, light and sound,bubbles beginning to form, solid/ semi solid precipitation form, and difficult to reverse it. A physical change is just a change of state or form eg melting ice or grinding salt. physical change can be the bending, cutting ,breaking, dissolving a substance in water (H2o)
What are three clues that a chemical has occurred?
Three clues that a chemical change has occurred:Color changesa precipitate formsa gas forms
What clues can you use to identify a chemical change?
Characteristics of a chemical change can include a temperature change, a color change, the production of bubbles, the production of a precipitate, and a smell.
What are the five clues that suggests a chemical reaction is taking place?
first when there's a physical change in the substance second there will be a solution or a formula to that substance third is, it involves temperature fourth is change in color of the substance fifth is the bubbling of another substance is yet an another clue that a chemical reaction has occured.
What 5 clues when considering a physical change?
5 clues of a chemical change
Four clues to a chemical reaction?
list four possible clues to a chemical change
What are three clues that a chemical change has occured?
Three clues that a chemical change has occurred:Color changesa precipitate formsa gas forms
What are three common clues that chemical change has occurred?
precipitate forms, color change, heat and light is given off, gas is formed usually hydrogen or co2
What are 5 clues that a chemical change as taken place?
These are the clues to tell if it's a chemical change or not1. Change in color 2. Energy change (cools, heats, light, sound)3. Gas production4. Odour change5. Precipitate production (eg. 2 liquids forming a solid substance)
What are some clues that an object has undergone a chemical change?
Color change, precipitate formation, gas formation, temperature change
What is four possible clues to chemical change?
change in temperature, change in color, formation of a gas
List some signs or clues that show that a change you are observing is a chemical change.?
flammability density smoke burned
Why is Wood burns to form black charcoal a chemical change?
It changes properties.Physical Changes:Physical changes are changes in the appearance but not in the chemical properties. Some physical changes can be undone so the item can be put back to almost its past form.Chemical Changes:Chemical changes are the changes in chemical properties. Chemical changes also change in appearance and/or leave behind traces to prove that a chemical change occurred. Chemical changes create a new substance when they happen, e.g., cooking an egg. Chemical changes cannot be undone as the molecules, patterns and properties have been changed.How to tell them apart:The way to tell the difference between chemical and physical changes is by the changes that it went through. There may be clues that a chemical change appeared because of sound, light, gas production or an odour. A physical change does not involve any of these.
