Unit 1 Review! Lesson 6-10

What is chemical bonding?

• Chemical bonding is the repulsion between atoms that prevents them from forming compounds.
• Chemical bonding is the process of breaking down compounds into individual atoms.
• Chemical bonding is the attraction between atoms that allows the formation of chemical compounds.
• Chemical bonding refers to the physical separation of atoms in a gas state.

The electrons orbit around the nucleus of the atom. They stay in layers called ______.

• atom

• shells

• axis

• line

When atoms without full outer shells come into contact with other atoms, they tend to want to give up. True or False

• True

• False

What are valence electrons?

• Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding

• Electrons that are responsible for the mass of an atom.
• Electrons that are always paired with protons.
• Electrons that are found in the nucleus of an atom.

How many valence electrons?

• 1

• 3

• 5

• 2

One element donates an electron (electrons) to another so that both elements will have a full outer shell

• Covalent Bonding

• Chemical Bonding

• Ionic Bonding

• Chemical Reaction

Electrons are shared between atoms rather than donated in order for the atoms of both elements to gain full outer shells.

• Covalent Bonding

• Ionic Bonding

• Chemical Change

• Family Bonding

Why and why will atoms donate or share their electrons?

• Atoms donate electrons to form new elements.
• To achieve a stable electron configuration, that is, full outer shell

• Atoms share electrons to create more energy.
• Atoms donate electrons to become heavier.

What is a chemical reaction?

• Chemical reactions are only physical changes in matter.
• Chemical reaction is a process where a set of substances undergo a chemical change to form a different substance

• Chemical reactions involve only the mixing of substances without any bond changes.
• Chemical reactions are processes that only occur at high temperatures.

What is a reactant in a chemical reaction?

• A substance that undergoes a chemical change during a reaction.

• Reactants are the energy released during a reaction.
• Reactants are the catalysts that speed up a reaction.
• Reactants are the products of a chemical reaction.