CHEMISTRY HIGH SCHOOL

Which characteristic is a property of molecular substances?(1) good heat conductivity(2) good electrical conductivity(3) low melting point(4) high melting point

Answers

Answer 1
Answer:

Answer: Option (3) is the correct answer.

Explanation:

Molecular substances are the substances which have two or more different atoms attached together.

Molecular substances have weak intermolecular forces of attraction thus, they have low melting and boiling point.

They have poor electrical conductivity as the bond formation in molecular compounds is covalent. Therefore, they also have poor heat conductivity.

Hence, out of the given options low melting point is the characteristic property of molecular substances.
Answer 2
Answer:

Answer is: 3) low melting point.

Molecular substances are usually gases and liquids with low melting point.

The melting point depends on the strength of the intermolecular forces.

Intermolecular forces are the forces between molecules.

Molecular substances have bad heat conductivity and electrical conductivity.

Molecular substances are bonded with covalent bonds.

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Answers

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True or False
a gas that ignites a glowing splint is oxygen

Answers

The statement is true , oxygen is a gas which ignites a glowing splint.

How does  oxygen ignite a glowing splint?

A splint is a simple piece which is used in scientific laboratories. They are typically long, thin strips of wood of about 6 inches  long and 1/4 inches wide. They are consumable and inexpensive. They are used  for lighting burners , chemical identification of various gases .

For gases which are hard to distinguish , a glowing splint test is used for identification of gases. . These tests are useful  for identifying whether the gas is oxidizing,flammable or chemically inert.Oxygen is one of the gases which can be identified using the splinter test as it is combustible.

For the test, the splint is lit  and is allowed to burn for a fraction of seconds and then blown out  as the tip is still hot it is introduced into the jar containing the oxygen gas  and thus re-igniting the splinter.

Learn more about splint,here:

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True, oxygen gas ignites a glowing splint

As air passes over a body of water, some of the carbon stored in the water is transferred to the atmosphere. This process is called _________________________________

Answers

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Describe the characteristics of compounds and explain how compounds are named

Answers

componds ares used to make another sentence along with another sentence . The are named as fanboys
for ,and, nor ,but ,or ,yet ,so

Q(0,5) and R(2,1) are the endpoints of a line segment. What is the midpoint M of that line segment.

Answers

To find the midpoint M of a line segment with endpoints Q(0,5) and R(2,1), you can use the midpoint formula:

Midpoint M = ((x₁ + x₂) / 2, (y₁ + y₂) / 2)

In this formula:

- (x₁, y₁) are the coordinates of the first endpoint (Q in this case).

- (x₂, y₂) are the coordinates of the second endpoint (R in this case).

Plug in the values:

M = ((0 + 2) / 2, (5 + 1) / 2)

M = (2 / 2, 6 / 2)

M = (1, 3)

So, the midpoint M of the line segment with endpoints Q(0,5) and R(2,1) is (1, 3).
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