CHILD DEVELOPMENT PEDAGOGY

GROWTH DEVELOPMENT CHILD

FORMATIVE ASSESSMENT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A recipe for a chemical substance is called a ____
A
coefficent
B
chemical formula
C
Oxygen
D
atom
Explanation: 

Detailed explanation-1: -Empirical formulas depict the simplest whole-number ratio of atoms in a compound, whereas molecular formulas depict the number of each type of atom in a molecule and structural formulas depict how the atoms in a molecule are bonded to each other. Thus, A chemical formula is like a recipe for a chemical substance.

Detailed explanation-2: -A chemical formula shows the elements that make up the compound and the numbers of atoms of each element in the smallest unit of that compound, be it a molecule or a formula unit. Knowing the names of the elements and a few basic rules allows us to name simple compounds given the chemical formula.

Detailed explanation-3: -A balanced chemical equation provides the same kind of quantitative information that a recipe does. How is a balanced equation like a recipe? Chemists use balanced chemical equations as a basis to calculate how much reactant is needed or product is formed in a reaction.

Detailed explanation-4: -A chemical formula tells us the number of atoms of each element in a compound. It contains the symbols of the atoms of the elements present in the compound as well as how many there are for each element in the form of subscripts.

There is 1 question to complete.