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.
Major atoms in living things
Oxygen, carbon, hydrogen, nitrogen.
Water molecule composition
One oxygen atom and two hydrogen atoms.
Atom charge on own
Usually uncharged due to equal protons and electrons.
Ions - Explanation
Atoms with electrical charge after gaining or losing electrons.
Covalent vs Ionic bonds
Covalent shares electrons; ionic transfers electrons.
Answer 10 questions on Water, Atoms, and Solutions.
1. What distinguishes an element from a molecule?
2. Which group contains the elements that make up most atoms in living things?
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