Metallic bonding occurs between atoms of(1) sulfur (3) fluorine(2) copper (4) carbon

Answers

Answer 1

Answer: As u see, copper is the only metal in the options. Therefore, metallic bonding occurs between atoms of copper.

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Which substance can not be broken down by a chemical reaction?(1) ammonia (3) methane
(2) argon (4) water

Answers

The substance that cannot be broken down by a chemical reaction is argon. This is because the substance is an element, otherwise if this is a compound, then it can be still broken down by chemical means. Ammonia, methane and water are all compounds.

The substance that cannot be broken down by chemical reaction is $\boxed{\left( 2 \right){\text{ argon}}}$ .

Further Explanation:

Substance is the pure form of matter while combination of atoms or molecules is termed as a mixture.

Types of substances:

1. Element

The simplest form of substance that cannot be further broken down by any chemical method is known as an element. Carbon, sulfur, and cobalt are some of the examples of elements.

2. Compound

When two or more different elements are held together by chemical bonds, compounds are formed. These can further be broken down into their respective constituents. Their properties are quite different from those of their constituent elements. NaCl, ${\text{C}}{{\text{H}}_{\text{4}}}$ and ${{\text{H}}_{\text{2}}}{\text{O}}$ are examples of compounds.

(1) Ammonia consists of one nitrogen and three hydrogen atoms so it is a compound. Therefore it can be broken down by chemical reactions.

(2) Argon is an element so it is the simplest form in which it can exist. Therefore it cannot be broken down by chemical reactions.

(3) Methane consists of one carbon and four hydrogen atoms so it a compound. Therefore it can be broken down by chemical reactions.

(4) Water consists of one oxygen and two hydrogen atoms so it is a compound. Therefore it can be broken down by chemical reactions.

Learn more:

Which sample is a pure substance? brainly.com/question/2227438
Which is a characteristic of a mixture? brainly.com/question/1917079

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Elements, compounds, and mixtures

Keywords: substance, methane, argon, ammonia, water, element, compound, chemical reactions, broken down, simplest form, NaCl, CH4, carbon, sulfur, cobalt.

The following Lewis structures represent valid resonance forms. true or false

Answers

The given Lewis structure does not show valid resonance form. So,the given statement is false.

What is Lewis structure?

The Lewis structure is the representation of the of valence shell in the molecule.

What is valence electron?

The electron present in outermost shell and which involve in chemical bond formation is called valence electron.

What is resonance structure?

Resonance is way to explain the localisation of electron in molecule where Lewis formula fails to describe.

The given statement is false because both structure shows different number of valence electron.

To learn more about Lewis structure here.

brainly.com/question/27037762

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Answer:

true

Explanation:

because Lewis represent valid resonance

Water molecules attract to one another to form what kind of bonds?

Answers

The bond is hydrogen bond, that happens with a (H -- O) bond.

What is a physical change

Answers

A change that one can see with the eye. Such as a new hairstyle or a growth over the years.

Hello there!

Explanation:

↓↓↓↓↓↓↓↓↓↓↓

Physical Change is a substance it does not change. Arrangement of molecules changes.

Solid
Liquid
Gas

Hope this helps!

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-Charlie

Observe the nature changing around your home. You can observe plants, animals, and parts of your actual home as you begin to notice changes in matter. Collect data for two examples of changes in matter. Use the Changes in Matter observation questions to determine if your examples are physical or chemical changes.Your answer should include two examples, the types of changes observed, and evidence of how the examples were formed. You can use this format:

Example 1:

Type of Change:

Evidence:

Answers

Answer:

Example 1. One change I observed was when cooking, I needed to boil water. The water was later evaporated due to the increase of heat from the stove below the pot. Heat traveled and transferred from the stove to the pot then the water. This change is from liquid to gas.

Example 2. I was mixing sugar into my tea, the sugar dissolved into the tea. This is an example of dissolving a solid into a liquid. The tea took the properties of the sugar and turned the drink sweet.

Extra, taking a hot shower and steam leaves the shower. This change is of evaporation.

Explanation:

Hope this helps, even though it was late! <3 :)

What location is 90 degrees away from the equator?A) The south pole
B) Polaris
C) Both A & B
D) The north pole

Answers

C) both A and B

Each parallel measures one degree north or south of the Equator, with 90 degrees north of the Equator and 90 degrees south of the Equator
Hope this helps!

Answer:

C) Both A and B

Explanation:

The axis of 0 degrees latitude is known as the Equator. With 90 degrees north of the Equator and 90 degrees south of the Equator, each parallel measures one degree north or south of the Equator. The North Pole is 90 degrees north latitude, and the South Pole is 90 degrees south latitude.

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