Chemical Bonds and Properties of Metals

Atoms seek stability by forming bonds. Metals lose electrons to form cations, while non-metals gain electrons to form anions. Ionic bonds form between metals and non-metals, while covalent bonds form between non-metals. Metallic bonds involve a 'sea of electrons' that gives metals their properties, such as conductivity and malleability. Alloying metals can enhance their strength and rigidity.

What happens to metals when they lose electrons?

• They become negatively charged.

• They gain more electrons.

• They become positively charged.

• They remain neutral.

Why do non-metals have high electronegativity?

• They have fewer valence electrons.

• They want to lose electrons.

• They hold onto their electrons tightly.

• They have a full valence shell.

What type of bond is formed between a metal and a non-metal?

• Covalent bond

• Ionic bond

• Metallic bond

• Hydrogen bond

How do non-metals achieve stability?

• By forming metallic bonds

• By gaining electrons

• By sharing electrons

• By losing electrons

What is the main characteristic of covalent bonds?

• Transfer of electrons

• Sharing of electrons

• Loss of electrons

• Gain of electrons

What is the 'sea of electrons' in metallic bonds?

• A fixed position of electrons

• A flow of electrons between atoms

• Electrons attached to specific atoms

• Electrons that do not move

Why are metals good conductors of electricity?

• They have a fixed electron position.

• They have tightly held electrons.

• They have free-moving electrons.

• They have no electrons.

What property allows metals to be shaped easily?

• High electronegativity

• Free movement of electrons

• Rigid atomic structure

• Fixed electron position

How can metals be strengthened?

• By removing electrons

• By alloying with different atoms

• By heating them

• By adding more electrons

What is an example of an alloy?

• Copper and tin

• Aluminum and zinc

• Gold and silver

• Pure iron