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3 years ago

How are freezing and condensation alike?

Chemistry

1 answer:

bija089 [108]3 years ago

6 0

Answer:

A. Both describe ways a solid can change.

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Consider the following properties: I) The red color of rubies is due to the presence of chromium ions. II) Objects made of silve

quester [9]

Answer:

II) Objects made of silver become tarnished.

Explanation:

Physical properties are the properties which can be observed without changing identity of substance.

Chemical properties are the properties which describe how the substance changes into the different substance completely.

Boiling is an example of physical change in state of the substance. Color is also an example of physical property like boiling point and hence these are constants. The reason of the color is that the chromium ions shows certain colors as the electrons are excited due to absorption of the light. The tarnishing of the silver is an example of the chemical change which occurs due to the reaction of the silver with oxygen. This is also known as corrosion.

5 0

4 years ago

Give the following for SO2 and BrF5:

frosja888 [35]

Answer:

The given molecules are SO2 and BrF5.

Explanation:

Consider the molecule SO2:

The central atom is S.

The number of domains on S in this molecule is three.

Domain geometry is trigonal planar.

But there is a lone pair on the central atom.

So, according to VSEPR theory,

the molecular geometry becomes bent or V-shape.

Hybridization on the central atom is

$sp^{2}$ .

Consider the molecule BrF5:

The central atom is Br.

The number of domains on the central atom is six.

Domain geometry is octahedral.

But the central atom has a lone pair of electrons.

So, the molecular geometry becomes square pyramidal.

The hybridization of the central atom is $sp^{3} d^{2}$ .

The shapes of SO2 and BrF5 are shown below:

6 0

3 years ago

Which 3 things are always equal for an atom?

bagirrra123 [75]

Answer:

Atoms always have an equal number of protons and electrons, and the number of protons and neutrons is usually the same as well.

Explanation:

4 0

3 years ago

Which of these is NOT a physical change?

alexdok [17]

Answer:

C. Magnetization of iron

Explanation:

This is a chemical change and cannot be undone by physical means therefore it isn't a physical change

6 0

3 years ago

How do you think dry cleaning works?

andriy [413]

<h2>During dry cleaning, the pump pulls solvent from the tank and sends it through the filters to remove any impurities. The filtered solvent then enters the cylinder, where it interacts with the fabrics and removes any soil. The solvent then travels back into the holding tank so it can begin the process again.</h2>

mark this as a brainliest

6 0

3 years ago