Atoms and Molecules: Understanding Matter

In the adventurous world of One Piece, what is the tiniest building block of an element that still holds all its magical properties, much like the smallest piece of treasure that holds immense value? Join Luffy and his crew on this quest for knowledge!

• Molecule

• Atom

• Compound

• Mixture

Answer explanation

The smallest unit of a chemical element that retains its chemical properties is an atom. Molecules are made of atoms, compounds consist of different atoms, and mixtures are combinations of substances, but only atoms are the fundamental units.

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DOK Level 1: Recall

Imagine you're on an adventure with Luffy, Nami, and Zoro from One Piece. Which of the following best describes a molecule?

• A single atom

• A group of atoms bonded together

• A mixture of different substances

• A pure element

Answer explanation

A molecule is defined as a group of atoms bonded together, which distinguishes it from a single atom, a mixture, or a pure element. Therefore, the correct choice is 'A group of atoms bonded together'.

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DOK Level 1: Recall

Imagine you're a tiny explorer like Luffy or Nami from One Piece, venturing into the world of solids. How are the particles arranged in this solid world?

• They are spread out and move freely

• They are tightly packed and vibrate in place

• They are loosely connected and slide past each other

• They are randomly scattered

Answer explanation

In a solid, particles are tightly packed together, which restricts their movement. They can only vibrate in place, maintaining a fixed shape and volume, unlike in liquids or gases where particles move more freely.

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DOK Level 1: Recall

Hey One Piece fans! Imagine Rasheem and MK are on an adventure with the Straw Hat Pirates to find a pure treasure. Can you help them out? Which of the following is an example of a pure substance?

• Saltwater

• Air

• Gold

• Salad

Answer explanation

Gold is a pure substance because it consists of only one type of atom, making it homogeneous. In contrast, saltwater, air, and salad are mixtures containing multiple components.

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DOK Level 1: Recall

Imagine you're on an adventure with Luffy, Zoro, and Nami on the Thousand Sunny, and the excitement is so high that everyone starts celebrating. What happens to the molecules of a substance when it changes from a liquid to a gas, just like the ship getting more lively?

• They move closer together

• They move farther apart

• They stop moving

• They form a solid structure

Answer explanation

When a substance changes from a liquid to a gas, its molecules gain energy and move farther apart, resulting in a less dense state. This is why the correct answer is that they move farther apart.

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DOK Level 2: Skill/Concept

Imagine you're a scientist in the world of One Piece, like Vegapunk or Caesar Clown. Which of the following best describes a compound?

• A single type of atom

• A mixture of different elements

• A substance made of two or more different types of atoms bonded together

• A solution of various substances

Answer explanation

A compound is defined as a substance made of two or more different types of atoms bonded together, distinguishing it from single atoms or mixtures. Therefore, the correct choice is that it is a substance made of different types of atoms.

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DOK Level 1: Recall

Imagine you're Luffy, the captain of the Straw Hat Pirates, having a chat with your friend Jinbe, who's a fish-man. How would you describe your movement compared to Jinbe's?

• Hey Jinbe, I'm more tightly packed than you are!

• Hey Jinbe, I move more freely and am farther apart from my fellow crew members than you are!

• Hey Jinbe, I'm less energetic than you are!

• Hey Jinbe, I'm more organized than you are!

Answer explanation

Particles in a gas are less tightly packed than in a liquid, allowing them to move more freely and be farther apart. This is a key characteristic that distinguishes gases from liquids.

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DOK Level 2: Skill/Concept

Hey One Piece fans! Can you help Luffy and his crew figure out the primary difference between a pure substance and a mixture as they explore the Grand Line?

• A pure substance contains only one type of atom or molecule, while a mixture contains multiple types

• A pure substance can be separated by physical means, while a mixture cannot

• A pure substance is always a solid, while a mixture is always a liquid

• A pure substance is always man-made, while a mixture is natural

Answer explanation

The correct choice states that a pure substance contains only one type of atom or molecule, while a mixture consists of multiple types. This distinction is fundamental in chemistry, as it defines the nature of substances.

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DOK Level 2: Skill/Concept

In the world of One Piece, Luffy and his crew are exploring a mysterious island. Which of the following is a fun example of a mixture they might encounter?

• Air

• Sodium chloride (NaCl)

Answer explanation

Air is a mixture of gases, including nitrogen, oxygen, and others, making it a heterogeneous mixture. In contrast, water, carbon dioxide, and sodium chloride are pure substances or compounds.

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DOK Level 1: Recall

In the world of One Piece, Luffy and his crew are experimenting with mysterious sea stones! When these stones dissolve in water, what type of change is happening?

• Physical change

• Chemical change

• Nuclear change

• No change

Answer explanation

When a bath bomb dissolves in water, it undergoes a physical change. The solid ingredients disperse in water, but no new substances are formed, distinguishing it from a chemical change.

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DOK Level 1: Recall