7 Questions
Which subatomic particle has a negative charge?
Electron
What is the chemical symbol for sodium?
Na
What is the formula for calculating the density of a substance?
$\frac{mass}{volume}$
Which of the following is an example of a chemical change?
Burning wood
Which of the following best describes a radical in chemistry?
A group of atoms that act as a single atom in a chemical reaction
What is the role of acids and bases in chemical reactions?
Acids and bases catalyze chemical reactions
What is the fundamental difference between an atom and a molecule?
An atom consists of only one type of element, while a molecule can have multiple types of elements
Test your knowledge of basic chemistry concepts with this Class 7 quiz. Answer questions about subatomic particles, density calculation, chemical symbols, and identifying chemical changes.
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