Elements, Compounds and Mixtures Test

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Elements, Compounds and Mixtures Test - 3

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Weekly Quiz Competition

Question 1
1 / -0

Which one of the substance is produced by two or more types of atoms or elements?

A
Element

B
Mixture

C
Compound

D
None of the above

Solution

A compound is a substance formed when two or more elements are chemically joined. Water, salt, and sugar are examples of compounds. When the elements are joined, the atoms lose their individual properties and have different properties from the elements they are composed of.
Question 2
1 / -0

Which of the following happens when chemical bonds are produced or broken down.

A
Chemical change

B
Physical changes

C
Water vapor.

D
None of the above.

Solution

During chemical reactions, the bonds that hold molecules together break apart and form new bonds, rearranging atoms into different substances. Each bond requires a distinct amount of energy to either break or form; without this energy, the reaction cannot take place, and the reactants remain as they were.
Question 3
1 / -0

Which of the following rocks are created from the sediments particles?

A
Sedimentary

B
Minerals

C
Lava

D
None of the above

Solution

Sedimentary rocks are formed from overburden pressure as particles of sediment are deposited out of air, ice, or water flows carrying the particles in suspension.
Question 4
1 / -0

The process of change in the rocks is called metamorphism and the rocks that are formed by these changes are called________________ rocks.

A
Metamorphic Rocks

B
Igneous Rocks

C
Gypsum

D
None of the above.

Solution

Metamorphic rocks start off as igneous, sedimentary, or other metamorphic rocks. These rocks are changed when heat or pressure alters the existing rock's physical or chemical make up. One way rocks may change during metamorphism is by rearrangement of their mineral crystals.
Question 5
1 / -0

From which of the following substance rocks are created?

A
Mineral

B
Elements

C
Physical Changes.

D
None of the above.

Solution

Rocks are composed of grains of minerals, which are homogeneous solids formed from a chemical compound arranged in an orderly manner. The aggregate minerals forming the rock are held together by chemical bonds. The types and abundance of minerals in a rock are determined by the manner in which it was formed.
Question 6
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Which one of the following is the simpler substance of physical means of, that is subdivided of the copper sulfate solution?

A
A compound

B
An element

C
A mixture

D
None of the above

Solution

It is a Compound. Any substance that can be divided further into simpler substances is said to be a compound.
Question 7
1 / -0

Which of the following are the components of Brass?

A
Copper and Tin

B
Copper and Zinc

C
Copper and Iron

D
Zinc and Tin.

Solution

Brass is an alloy of copper and zinc, in proportions which can be varied to achieve varying mechanical and electrical properties. It is a substitutional alloy atoms of the two constituents may replace each other within the same crystal structure.
Question 8
1 / -0

Which of the following is related to Matter?

A
mass and space

B
elements and compound

C
vapor and mixture

D
None of the above.

Solution

Matter is a substance that has inertia and occupies physical space. According to modern physics, matter consists of various types of particles, each with mass and size.
Question 9
1 / -0

Which of the following element is an atom?

A
H

B
Ne

C
Na

D
N

Solution

The simple, fundamental unit of an element is its atom. An element like helium, neon, argon etc. already have this octet of electrons, so they are stable as they are. So, they don't combine with other atoms; so these elements (inert gases) exist as atoms.
Question 10
1 / -0

The gas which is used for cooking at our home is _____________.

A
Oxygen

B
Nitrogen

C
L.P.G.

D
C.N.G.

Solution

Liquefied petroleum gas is used for cooking food at the homes.

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Re-Attempt Weekly Quiz Competition

Elements, Compounds and Mixtures Test - 3

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Elements, Compounds and Mixtures Test - 3

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Question 1

Element

Mixture

Compound

None of the above

Solution

Question 2

Chemical change

Physical changes

Water vapor.

None of the above.

Solution

Question 3

Sedimentary

Minerals

Lava

None of the above

Solution

Question 4

Metamorphic Rocks

Igneous Rocks

Gypsum

None of the above.

Solution

Question 5

Mineral

Elements

Physical Changes.

None of the above.

Solution

Question 6

A compound

An element

A mixture

None of the above

Solution

Question 7

Copper and Tin

Copper and Zinc

Copper and Iron

Zinc and Tin.

Solution

Question 8

mass and space

elements and compound

vapor and mixture

None of the above.

Solution

Question 9

H

Ne

Na

N

Solution

Question 10

Oxygen

Nitrogen

L.P.G.

C.N.G.

Solution

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