Explanation

Explanation

The elements of the periodic table sorted by atomic number

Atomic number Name chemical element                 Symbol

1                         Hydrogen                                             H

2                         Helium                                                     He

3                         Lithium                                                      Li

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RY 15-01-2023

Explanation

Cellulose is a carbohydrate.

Important Question

Both starches and cellulose are carbohydrates.

Cellulose is a fibrous carbohydrate found in all plants.

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Carbohydrate polymers, such as cellulose and chitin, are the most abundant materials found in nature.

Carbohydrates are stored in plants and animals in the following respective forms Starch and glycogen

Fructose is a carbohydrate known as Fruit Sugar

ND16-8-2023

Explanation

Limestone consists of calcium carbonate,

which has the chemical formula CaCO3.

Calcium carbonate is a chemical compound.

It is a common substance found in rocks as the minerals calcite.

Explanation

Silicon is a chemical element with the symbol Si and atomic number 14.

Silicon dioxide (SiO₂) is the primary component in glass, making it transparent and durable.

It is obtained from sand (quartz).

It is essential in glass manufacturing

Explanation

Elements are placed in order on the periodic table based on their atomic number, how many protons they have.

In a neutral atom, the number of electrons will equal the number of protons, so we can easily determine electron number from atomic number.

Explanation

Carbon is a non-metal, found in forms like graphite and diamond.

Copper, iron, and chromium are all metals.

Explanation

Explanation

Diamond is an allotrope of carbon.

Hence, it is made up of carbon.

Diamond is a very expensive ornament.

It is composed of a single element carbon.

Explanation

Potassium is the chemical element.

Symbol: K 

Atomic number: 19

Electron configuration: 4s1

Electrons per shell: 2, 8, 8, 1