Unit 2: Final Exam

Hey Grace and Daniel, can you guess what an atom is?

• The smallest unit of life

• The smallest unit of matter

• Multiple objects bonded together

• Multiple objects combined but not bonded together

Hey Elijah and Charlotte, can you guess where the electrons love to hang out in an atom?

• nucleus

• electron cloud

• electron configuration

• nucleic circle

Imagine you're a tiny atom in the universe, trying to keep your cool. What do you need to balance to stay stable, just like Rohan balancing his books on his head?

• protons and neutrons

• protons and electrons

• neutrons and electrons

What would you call the image below and why?

• It is a molecule because it is multipole atoms bonded together
• It is a mixture because it is multiple atoms bonded together
• It is a molecule because it is multiple atoms combined but not bonded together
• It is a mixture because it is multiple atoms combined but not bonded together.

Neon is a chemical element with the symbol NE and an atomic number of 10. Which of these best shows a model of an atom of Neon

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Methanol is a molecule made up of 4 Hydrogen atoms, 1 Carbon atom, and 1 Oxygen atom. All of the models below could be used to represent a molecule of Methanol except

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Hey Rohan and Mason, let's dive into the world of chemistry! Can you help identify which of these are compounds?

• Neon (Ne)

• Ozone (O3)

• Water (H2O)

• Nitrogen (N2)

• Ammonia (NH3)

In a thrilling chemistry showdown, what do you think happens when William's favorite sodium atom meets Maya's adventurous chlorine atom?

• an element

• a compound

• an electron

• a neutron

Liam and Abigail are baking cookies for a school project, and they need to use baking soda. The chemical formula for baking soda is NaHCO3. Which term best describes baking soda?

• element

• mixture

• solution

• compound

Hey science explorers! Grace and Ethan are on a quest to uncover the mysteries of the atom. Can you help them by selecting all the terms that describe parts of an atom?

• proton

• isotope

• nucleus

• electron

• molecule