Atom-Element-Molecule-Compound 1st

What is the difference between an atom and a molecule?

• An atom is made up of protons, neutrons, and electrons, while a molecule is made up of two or more atoms bonded together.
• An atom is a single entity, while a molecule is made of elements.
• An atom is always stable, while a molecule is not.
• An atom cannot be separated by chemical reactions, while a molecule can.

How are atoms and molecules related to each other?

• Atoms and molecules have the same number of protons.
• Atoms combine to form molecules.
• Molecules break down into individual atoms.
• Atoms and molecules have the same physical and chemical properties.

Can molecules be broken down? Explain your answer.

• No, molecules are indestructible.
• Yes, molecules can be broken down to form new substances.
• Only certain molecules can be broken down.
• Molecules can be broken down by physical means, but not by chemical reactions.

What is an element?

• A substance made up of two or more different elements chemically combined.
• An atom with a positive charge.
• A pure substance made up of only one type of atom.
• A group of two or more atoms bonded together.

What is a compound?

• A substance made up of two or more different elements chemically combined.
• A pure substance made up of only one type of atom.
• A group of two or more atoms bonded together.
• An atom with a positive charge.

Which of the following best describes an atom?

• The smallest unit of matter that retains the properties of that matter, composed of electrons, protons, and neutrons.
• A group of two or more atoms bonded together.
• A pure substance made up of only one type of atom.
• A substance made up of two or more different elements chemically combined.

Which of the following best describes a molecule?

• The smallest unit of matter that retains the properties of that matter, composed of electrons, protons, and neutrons.
• A group of two or more atoms bonded together.
• A pure substance made up of only one type of atom.
• A substance made up of two or more different elements chemically combined.

How are protons, neutrons, and electrons arranged in an atom?

• Protons and neutrons are found in the atomic nuclei, while electrons orbit the nucleus.
• Protons and electrons are found in the atomic nuclei, while neutrons orbit the nucleus.
• Protons, neutrons, and electrons are all found in the atomic nuclei.
• Protons, neutrons, and electrons are all found orbiting the atomic nucleus.

What happens to an atom when it becomes negatively or positively charged?

• It becomes unstable.
• It becomes neutral.
• It splits into multiple atoms.
• It loses its electrons.

How can atoms become balanced again when they become negatively or positively charged?

• They can attract one another to form a chemical bond.
• They lose or gain protons.
• They lose their atomic nuclei.
• They become smaller in size.