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4 years ago

Which observation most likely indicates that a physical change has taken place?(1 point)

Chemistry

2 answers:

swat324 years ago

8 0

Answer:

Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. ... Examples of physical properties include melting, transition to a gas, change of strength, change of durability, changes to crystal form, textural change, shape, size, color, volume and density.

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lys-0071 [83]4 years ago

5 0

Answer:

1 , D

2. D

3. D

Explanation:

1.changes to crystal form, textural change, shape, size, color, volume and density.

2. because the chemical components are still the same( h2o) in order to change it back you have to do a physical change

3. because the process is irreversible physically and you will have to do a chemical change to change it back ( if thats even possible which to rn its not )

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How many grams are in 0.35 moles of C2H6?

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Explanation:

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3 years ago

What charge would an ion have if it had more electrons than protong?

max2010maxim [7]

Answer:

D. It would have a net negative charge

Explanation:

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The charge can thus be calculated as follows:

Charge of atom = no. of protons - no. of electrons.

Hence, when the number of electrons in an atom is higher than that of the protons, it means that the atom has gained negatively charged electrons, making that atom have a net negative charge. For example, In an atom that contains 10 protons and 11 electrons, the charge of that atom will be (10 - 11) = -1. The net charge of that atom will be -1, which is NEGATIVE.

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3 years ago

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Explanation:

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