Examine the following reactions. which of the following is true about compound c? reaction 1 reaction 2 reaction 3 reaction

10 answers
Question:

Examine the following reactions. which of the following is true about compound c? reaction 1 reaction 2 reaction 3 reaction 4 a + b → c + d → e + f → g + h examine the following reactions. which of the following is true about compound c? reaction 1 reaction 2 reaction 3 reaction 4 a + b c + d e + f g + h c is the product of reaction 1 and a reactant for reaction 2. c is the reactant of reaction 1 and a product for reaction 2. c is a product for reaction 2 only. c is a reactant for reaction 1 only.

Answers

The correct statement about compound C is :

C is the product of reaction 1 and a reactant for reaction 2.

Explanation:

In a chemical reaction reactant are written on left hand side and product are written on right side.

A + B → C + D

Reactants in above equation = A , B

Products in above equation = C , D

C + D → E + F

Reactants in above equation = C , D

Products in above equation = E , F

E + F → G + H

Reactants in above equation = E , F

Products in above equation = G , H

So, from the given options the the correct statement about compound C is :

C is the product of reaction 1 and a reactant for reaction 2.

The correct option is that the compounds are created by chemical reactions.

Explanation:  

Option 1: Elements combine chemically in a specific ratio to form compounds. They can't be separated by physical methods like filtration. For example, [tex]H_2O[/tex] is made up 2 H-atoms and 1 O-atom. When we filter water through normal filtration, we do not obtain H-atom and O-atom separately, but we get combined form of hydrogen and oxygen atom that is [tex]H_2O[/tex].

Option 2: Compounds are formed when two or more elements combine chemically.

[tex]2H_2(g)+O_2(g)\rightarrow 2H_2O(l)[/tex]

Option 3: Compounds can have more than two types of elements. For example, In [tex]CaCO_3[/tex], 3 elements are present - Calcium(Ca), Carbon(C), Oxygen(O).

Option 4: Compounds formed have different properties from one another. There can be difference in physical properties as well as chemical properties. For example, [tex]H_2O[/tex] (water) and [tex]CaCO_3[/tex] (calcium carbonate) are two compounds. Water is present in liquid state and calcium carbonate is present in solid state. Hence, it showed that all the compounds cannot have same properties.

The correct option is that the compounds are created by chemical reactions.

Explanation:  

Option 1: Elements combine chemically in a specific ratio to form compounds. They can't be separated by physical methods like filtration. For example, [tex]H_2O[/tex] is made up 2 H-atoms and 1 O-atom. When we filter water through normal filtration, we do not obtain H-atom and O-atom separately, but we get combined form of hydrogen and oxygen atom that is [tex]H_2O[/tex].

Option 2: Compounds are formed when two or more elements combine chemically.

[tex]2H_2(g)+O_2(g)\rightarrow 2H_2O(l)[/tex]

Option 3: Compounds can have more than two types of elements. For example, In [tex]CaCO_3[/tex], 3 elements are present - Calcium(Ca), Carbon(C), Oxygen(O).

Option 4: Compounds formed have different properties from one another. There can be difference in physical properties as well as chemical properties. For example, [tex]H_2O[/tex] (water) and [tex]CaCO_3[/tex] (calcium carbonate) are two compounds. Water is present in liquid state and calcium carbonate is present in solid state. Hence, it showed that all the compounds cannot have same properties.

4) They are substances.

Explanation:

Compounds are substances that are made up of two or more kind of atoms that are chemically bonded together.

The properties of a compound is distinct and different from those of the individual elements that combines to make it up.

What then is a substance?

Any matter be it solid, liquid or gas with a specific composition is a substance. For example, NaCl is common salt and its chemical properties are uniform in all parts but sea water is not a substance as it is made up of water, mineral salts, dissolved gases etc.

5. B air is a mixture of many elements, but is not a chemically fused.


6. B Beef stew, composition varies throughout.


7. A. They can be chemically separated into their component elements, but they are all homogenous, and as such, have constant composition, which differs from the components properties, as the components must undergo a chemical change to become compounds.

Explanation: t

the answer is b..because it takes a chem. reaction to make them perform normally...

The correct answer is B

Explanation:

Compounds are always the result of a chemical reactions because they consist of one or more elements.

They are in a fixed ratio

Explanation:

Compound are formed by two or more elements chemically combined. For example: H^2O is the water formula, this is a compound because you two elements which are Hydrogen and Oxygen and together they form a compound. The (^2) is the amount of atoms the formula has, in this case Hydrogen has two atoms and Oxygen is neutral.

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