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Grade 9 Science Q1: Matter & Chemical Reactions Practice Questions — Set 5

What does the coefficient 2 represent in 2H₂O?

Why must chemical equations be balanced?

Which pH value indicates a strong acid?

What is a characteristic property of bases?

What is formed when an acid reacts with a base?

How many valence electrons does carbon have?

What happens to atomic radius as you move down a group?

Which element has the electron configuration 2,8,7?

What is an isotope?

Which noble gas has a complete outer shell with 8 electrons?