★ Must-know
Further detail
1. What distinguishes an element from a molecule?
2. Which group contains the elements that make up most atoms in living things?
3. Which pairing correctly matches each subatomic particle with its electrical charge?
What is an element in terms of atoms?
An element is a kind of atom with its own characteristic properties.
Which atoms are most common in living things?
Oxygen, carbon, hydrogen, and nitrogen are most common in living things.
What are the three types of subatomic particles in atoms?
Protons, electrons, and neutrons.
Why do atoms usually have no electrical charge?
Because they have equal numbers of protons and electrons.
Element - Definition
A type of atom with specific properties.
Molecule - Formation
Atoms bonded together to form a substance.
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