Practice Test | Chapter 5 - The Structure of Matter

Front

What is a protein made of?

Back

A protein is a polymer made of amino acids.

Front

What type of bond is formed by the attraction between positively charged metal ions and the electrons around them?

Back

A metallic bond.

Front

What is the name of the covalent compound SO₂?

Back

Sulfur dioxide.

Front

What type of bond holds a molecule of water (H₂O) together?

Back

Covalent bonds.

Front

How many atoms of oxygen are in a molecule of carbon dioxide (CO₂)?

Back

Two atoms of oxygen.

Front

Define a polymer.

Back

A polymer is a large molecule made up of repeating structural units (monomers), typically connected by covalent chemical bonds.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons from one atom to another, while covalent bonds involve the sharing of electrons between atoms.

Front

What is the significance of hydrogen bonds in water?

Back

Hydrogen bonds give water its unique properties, such as high surface tension, high specific heat, and the ability to dissolve many substances.

Front

What is the molecular formula for glucose?

Back

C₆H₁₂O₆.

Front

What is the role of electrons in chemical bonding?

Back

Electrons are involved in forming bonds between atoms, either by being shared (covalent bonds) or transferred (ionic bonds).