Question

reading check (page 45): how are ionic and covalent bonds alike? how are they different?
lesson 2.1 review

1. describe the major subatomic particles that make up an atom (proton, neutron and electron). draw a labelled diagram of an atom.
2. explain why isotopes of an element have the same chemical properties.
3. compare the physical and chemical properties of a compound to those of the elements of which it is composed.
4. what are the differences between ionic bonds and covalent bonds?
5. how could you use red, blue and yellow marbles to model a carbon atom? draw a labeled model of a carbon atom below with the proper number of protons, neutrons and electrons.

Explanation:

1. Protons, neutrons in nucleus, electrons in orbitals. Diagram shows these.
2. Isotopes have same protons, so same electron - shell structure, thus same chemistry.
3. Compounds have different properties than component elements due to new bonding.
4. Ionic is transfer of electrons, covalent is sharing.
5. Use marbles for protons, neutrons, electrons based on carbon's 6 protons, 6 neutrons, 6 electrons.

Answer:

1. Protons and neutrons in nucleus, electrons in energy - levels around it. Diagram with labeled parts.
2. Same number of protons means same electron configuration and chemical behavior.
3. Compounds have distinct physical and chemical properties from elements because of bonding.
4. Ionic: electron transfer; Covalent: electron sharing.
5. Red for protons, blue for neutrons, yellow for electrons; draw with 6 of each for carbon.