Question

write 5 molecules of element and compound .

Answer 1

Answer:

Explanation:

ELEMENTS:

H2 - Hydrogen.

O2 - OXYGEN

S8- SULPHUR

N2- NITROGEN

F2- FLURINE

COMPOUND

Water - Formula: H2O = Hydrogen2 + Oxygen. ...

Hydrogen Peroxide - Formula: H2O2 = Hydrogen2 + Oxygen2 ...

Salt - Formula: NaCl = Sodium + Chlorine. ...

Baking Soda - Formula: NaHCO3 = Sodium + Hydrogen + Carbon + Oxygen3

Octane - Formula: C8H18 = Carbon8 + Hydrogen18

Answer 2

Answer and Explanation:

$\huge \text{\boxed{\boxed{\mathbb{ELEMENTS}}}}$

$\diamond$ Elements are substances which are composed of only one type of atom

$\diamond$ Elements are pure substance

$\diamond$ The defining property of an element is the number of protons in its nucleus which is called as its atomic number

$\diamond$ Some examples of elements are :

1. Sodium $\implies$ Na
2. Boron $\implies$ B
3. Hydrogen $\implies$ H
4. Oxygen $\implies$ O
5. Iron $\implies$ Fe

$\huge \text{\boxed{\boxed{\mathbb{COMPOUNDS}}}}$

$\diamond$ Compounds are substances which are composed of two or more types of atoms

$\diamond$ Compounds are also pure substances

$\diamond$ It is or can be formed by the chemical reactions between different elements

$\diamond$ Some examples of elements are :

1. Table salt or sodium chloride$\implies$ NaCl
2. Sugar or sucrose $\implies$ C₁₂H₂₂O₁₁
3. Biogas or methane $\implies$ CH₄
4. Vinegar or acetic acid $\implies$ CH₃COOH
5. Water or dihydrogen monoxide $\implies$ H₂O