CHILD DEVELOPMENT PEDAGOGY

GROWTH DEVELOPMENT CHILD

FORMATIVE ASSESSMENT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Water compound
A
NaCl
B
H2O
C
Protein
D
CaCO
Explanation: 

Detailed explanation-1: -The chemical formula for water is H2O, which means each molecule of water consists of one oxygen atom chemically bonded to two hydrogen atoms. Thus, water is a compound.

Detailed explanation-2: -Water is a compound because it is made up of water molecules. There is no such thing as water atoms. Water molecules are made of hydrogen and oxygen atoms, in the definite proportion of two hydrogens for one oxygen.

Detailed explanation-3: -The chemical formula of water is H2O, as it has 2 hydrogen atoms and 1 oxygen atom. So, the chemical name of water is dihydrogen oxide.

Detailed explanation-4: -A water molecule has three atoms: two hydrogen (H) atoms and one oxygen (O) atom. That’s why water is sometimes referred to as H2O. A single drop of water contains billions of water molecules.

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