Atoms & Subatomic Particles
These two particles are found in the nucleus of an atom.
What are protons and neutrons?
This molecule is made of two oxygen atoms bonded together.
What is O₂?
This substance forms an extended structure: CO₂, H₂O, NaCl, or O₂?
What is NaCl (table salt)?
This is the most "satisfying" atomic models to look at.
What is Space Filling Model?
The force that holds atoms together in molecules.
What are chemical bonds?
This subatomic particle has a negative charge.
What is an electron?
This best describes a compound: a substance made of…
What are two or more different elements bonded together?
Atoms in NaCl are held together by these.
What are chemical bonds?
This is a diatomic molecule: CO₂, O₂, H₂O, or NaCl?
What is O₂?
Select all that are compounds: NaCl, O₂, H₂O, CO₂.
What are NaCl, H₂O, and CO₂?
An atom with 6 protons, 6 neutrons, and 6 electrons is this element.
What is carbon?
Water (H₂O) is made of these atoms.
What are two hydrogen atoms and one oxygen atom?
This diagram best represents an extended structure.
What is a repeating pattern of atoms connected in all directions?
This symbol is shorthand for an element, not a picture of the atom but its letters and subscripts
What is the chemical formula?
This is the main difference between molecules and extended structures.
What is, molecules are small groups of atoms, extended structures are repeating patterns?
If an atom loses an electron, it will have this charge.
What is positive?
Carbon dioxide can be described as this:
What is one carbon atom bonded to two oxygen atoms?
Why does NaCl form a crystal structure instead of separate molecules?
What is because atoms repeat in a large, organized pattern?
A model showing one carbon atom bonded to four hydrogen atoms represents this molecule
What is CH₄ (methane)?
This explains why Substance B (C₆H₁₂O₆) is more complex than Substance A (H₂O).
What is, Because it has more atoms and a larger variety of bonds compared to H₂O.
All matter is made of these
What are atoms?
Scientists analyzed H₂O and C₆H₁₂O₆. H₂O is simple, but C₆H₁₂O₆ is considered this.
What is a complex molecule?
Sample X (CO₂ gas) is made of molecules, while Sample Y (NaCl) forms this type of structure.
What is an extended structure?
Water forms small molecules, but NaCl forms repeating crystal structures. This explains why water is ______ and NaCl is ______ at room temperature.
What is an extended structure?
This describes one way molecules, such as CO₂, differ from extended structures, like NaCl crystals.
Molecules exist as small, separate groups of atoms, while extended structures repeat in large, organized patterns like crystals.