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Chemical Changes involve a change in chemical composition in the substances which are being investigated so you cannot easily get back your original substances as something new has been formed. Some examples of chemical changes are a gas is produced, the temperature changes, a substance disappears, a solid is formed, a color change occurs, and a new odor is produced.
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What changes gives NO evidence that a chemical reaction has taken place?
Changes such as a change in state (solid to liquid), change in color, change in odor, change in solubility, or change in temperature do not provide direct evidence that a chemical reaction has occurred. These changes can be indicative of a physical change rather than a chemical change. To confirm a chemical reaction, additional evidence such as the formation of new substances, evolution of gas, or consumption of reactants is necessary.
Bubbling present during a chemical reaction is evidence of what?
Bubbling present during a chemical reaction is evidence of a gas being produced. The formation of gas bubbles indicates that a chemical change is taking place, often as a result of a reaction between two or more substances.
What physical evidence supports the evolution of Earth due to chemical weathering?
Physical evidence supporting the evolution of Earth due to chemical weathering includes the formation of sedimentary rocks like limestone, sandstone, and shale, which result from the accumulation and compaction of weathered material. Additionally, the presence of regolith, which is the layer of loose material covering bedrock, is also indicative of chemical weathering processes. Landforms such as caves, valleys, and canyons are further evidence of the shaping of Earth's surface by chemical weathering over time.
What is the only sure evidence for a chemical reaction?
The only sure evidence for a chemical reaction is the formation of new substances with different properties from the original reactants. This can be observed through changes in color, odor, temperature, or the production of a precipitate or gas.
What is the evidence that a chemical reaction occured in silver nitrate and potassium iodide?
The evidence that a chemical reaction occurred in the reaction between silver nitrate and potassium iodide is the formation of a yellow precipitate of silver iodide. This precipitate forms due to the exchange of ions between the two reactants, resulting in the creation of a new compound with different chemical properties than the original substances.
Are Fizzing or foaming evidence that a chemical change may have occurred?
yes it s an evidence that a chemical change has been occurred
What observations give evidence that chemical reaction has happen?
No
What evidence of chemical reaction would be seen when burning a match?
Burning is a chemical reaction (oxidation).
What evidence led you to formulate the composition of the solid residue after heating the marble chip?
The evidence is by chemical analysis.
What is the evidence of chemical digestion?
when you intake a chemical through your digestive system, it will later turn up in your bloodstream.
Who has evidence of a chemical change that you can see?
You do, whenever you fry an egg.
What evidence of a chemical reaction is shown in the photo?
lol what photo
What changes gives NO evidence that a chemical reaction has taken place?
Changes such as a change in state (solid to liquid), change in color, change in odor, change in solubility, or change in temperature do not provide direct evidence that a chemical reaction has occurred. These changes can be indicative of a physical change rather than a chemical change. To confirm a chemical reaction, additional evidence such as the formation of new substances, evolution of gas, or consumption of reactants is necessary.
What is the only evidence of a chemical change?
The only evidence of a chemical change is the formation of new substances with different chemical properties than the original substances. This can include changes in color, odor, temperature, or the formation of a precipitate.
Why is there no evidence of chemical weathering on the moon?
there is a lack of biological activity on the moon
Is evidence of a chemical change?
Explain how a mixture of sand and salt can be separated.
How the evidence of the chemical reactions demonstrated bonding theory.?
New compounds are obtained because new chemical bonds are formed.
