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What makes one compound different from another?

What makes one compound different from another?

A compound always consists of the same elements in the same ratio. If the same elements combine in different ratios, they form different compounds. Types of compounds include covalent and ionic compounds. They differ in the nature of the bonds that hold their atoms or ions together.

What is a compound with two different elements?

When two distinct elements are chemically combined—i.e., chemical bonds form between their atoms—the result is called a chemical compound. Most elements on Earth bond with other elements to form chemical compounds, such as sodium (Na) and Chloride (Cl), which combine to form table salt (NaCl).

What kind of mixture is marbles?


Is lifting chalk the same as regular chalk?

“Regular” chalk is calcium carbonate. The “lifting” chalk is in fact magnesium carbonate, so no, they are not the same although some natural (limestone) carbonate rocks, called dolomite, are a mixture of the two.

Which property of chalk is responsible for absorption of water in it?

Chalk is made mainly from calcium carbonate, calcium sulfate, or magnesium silicate – depending on the application. But it doesn’t matter, because all 3 of these are salts: a metal ionically bonded to a non-metal. A fundamental property of salts is that they absorb water, often in the form of hydrates.

Why does a chalk absorb water or ink?

Chalk dipped in ink is an example of sorption that is adsorption and absorption taking place simultaneously. The ink particles get adsorbed while the solution’s water gets absorbed.

Which of the following phenomenon occurs when a chalk stick is dipped in ink?

Solution : When a chalk stick is dipped in ink absorption as well as absorption both occurs. Adsorption of coloured substance and absorption of solvent takes place.

Does sponge absorb water?

In this activity, children explore absorption through hands-on playing with sponges. A sponge can absorb water; that is, the water clings to the sponge and fills up the holes in the sponge. You can squeeze the sponge to release the water (but you can’t squeeze it completely dry!).

What property does the sponge have for it to absorb water?

The unique porosity provides a large surface area with an open cell structure. Therefore, the natural cellulose sponge is able to absorb 20 times its own dry weight of water and retain this in its pore structure. The cellulose sponge will retain the liquid until this capacity is reached.