Identify the compound. Which of these is a compound?

Chemistry

2 answers:

STatiana [176]3 years ago

8 0

Answer: Image 3 is a compound.

Explanation: A compound is something that consists of two or more different elements bonded chemically.

A molecule is formed when two or more elements combine chemically.

An element is described as something which cannot be broken down by any chemical means.

We are given 4 images.

Image 1 is an element as it is showing the shell structure of Oxygen (O) element.

Image 2 is an element as only 1 element is known that is Magnesium (Mg).

Image 3 is a compound as in the structure 2 elements are shown which is bonded together. Elements present in this are Carbon (C) and Oxygen (O).

Image 4 is a molecule as in the structure 2 H-atoms combine chemically, but it cannot be considered as compound as the two elements are not different.

Bond [772]3 years ago

7 0

The answer has to be either CO2 or mg. But i am not sure which one

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Calcium reacts with oxygen to form calcium oxide. The chemical equation for this reaction is Ca + O2→CaO . What is the product,

iris [78.8K]

Answer:

A. CaO

Explanation:

Reactant are the species that take part in and also undergoes the reaction to form species which are known as products.

Symbolic representation of the chemical reaction with the help of the formulas and symbols is known as chemical equation. In the chemical equation, reactants are written at left-hand side as well as products are expressed or written on right-hand side. The coefficients which are written before the formulas or the symbols are known as stoichiometric numbers.

Thus, in the reaction shown below:-

$Ca+O_2\rightarrow CaO$