Activity 3 Crossword Puzzle Solutions

Across:

4. BOHR MODEL: The Bohr model is a model of the atom that describes electrons orbiting the nucleus in specific energy levels. It was proposed by Niels Bohr in 1913.
5. ELECTRONS: Electrons are negatively charged particles that orbit the nucleus of an atom. They are responsible for chemical bonding and the flow of electricity.
6. ELECTRONS: Same as above.
7. ATOMS: Atoms are the smallest unit of an element that retains the chemical properties of that element. They are made up of protons, neutrons, and electrons.

Down:

1. RUTHERFORD MODEL: The Rutherford model is a model of the atom that describes a positively charged nucleus surrounded by a cloud of negatively charged electrons.
2. NEUTRON: Neutrons are neutral particles found in the nucleus of an atom. They are responsible for the stability of the nucleus.
3. ATOMIC MODEL: An atomic model is a representation of the structure of an atom. Different atomic models have been developed over time to explain the behavior of atoms.
4. DALTON'S MODEL: Dalton's atomic model is a simple model that describes atoms as solid, indivisible spheres. It was proposed by John Dalton in 1803.
5. NUCLEUS: The nucleus is the central part of an atom that contains protons and neutrons. It is responsible for the atom's mass and its positive charge.
6. PROTONS: Protons are positively charged particles found in the nucleus of an atom. They are responsible for the atom's atomic number.​