🔹Topic 0-chemistry fundamentals Flashcards Preview

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Flashcards in 🔹Topic 0-chemistry fundamentals Deck (3)
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1
Q

What are isotopes?

A

Atoms of the same element with a different number of neutrons

2
Q

Give a difference between giant structures and molecular substances

A

Giant structures are made of billions of atoms chemically bonded together but molecular substances are made of many molecules

3
Q

In magnesium oxide, why is the mass of products greater than the initial mass of magnesium?

A

Because the atoms of oxygen are now being weighed as bonded to magnesium. They weren’t part of the original mass as they were in the air