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Colt1911 [192]
3 years ago
6

What must occur in a substance in order to determine a chemical property?

Chemistry
2 answers:
MissTica3 years ago
6 0
Change(A chemical reaction.)
liraira [26]3 years ago
6 0

Answer;

-Change in the substance in presence of another;

Explanation;

-A chemical property can be determined only when a change in the substance occurs in the presence of another substance or when sufficient energy of some form is added to it.

-Chemical properties can be established by changing a substance's chemical identity, and are different from physical properties, which can be observed by viewing or touching a sample.

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When water is solid, do molecules move?
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Answer:

Ice is water in its solid form. Ice keeps its shape, even if it's removed from the container. The molecules in ice are locked into place and cannot move or slide past one another, but they do vibrate a little bit.

Explanation:

As the temperature drops or decreases, the water molecules gradually slow down. Eventually they stop moving and simply vibrate back and forth. At this point ice is formed, the solid phase of water. If the temperature is allowed to increase, the molecules will once again begin to vibrate faster and faster.

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When sodium chloride is dissolved in water, the resulting solution is classified as a?
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A homogeneous mixture is formed when it is dissolved in water
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Which expression is equal to the number of grams (g) in 2.43 kilograms (kg)?
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3 years ago
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Which of the following is true for balancing equations?
nataly862011 [7]

Answer:

D) There must be equal number of atoms of each elements on both sides of equation.

Explanation:

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Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

Explanation:

This law was given by french chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

For example:

In given photosynthesis reaction:

6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂

there are six carbon atoms, eighteen oxygen atoms and twelve hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass.

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