Chemical Formulas
What does the formula H₂O tell us about the number of hydrogen and oxygen atoms?
What is 2 hydrogen atoms and 1 oxygen atom.
What type of elements usually form ionic compounds?
What is Metals and nonmetals
What type of elements usually form covalent compounds?
What is Two nonmetals.
What is the correct name for NaCl?
What is Sodium chloride.
Why do ionic compounds form crystal lattice structures?
What is Oppositely charged ions repeat in a stable, 3D pattern.
In C₆H₁₂O₆, what do the subscripts 6, 12, and 6 represent?
What is 6 carbons, 12 hydrogens, 6 oxygens
Define cation and anion. Give an example of each.
What is Cation = positive ion (Na⁺). Anion = negative ion (Cl⁻)
Why do covalent compounds share electrons instead of transferring them?
What is to fill outer shells without forming ions.
What ending is added to the second element in an ionic compound?
What is “–ide” (example: chloride, oxide).
Why do covalent compounds often not conduct electricity?
What is They lack free-moving charged particles.
How does H₂O₂ differ from H₂O, and why is the subscript important?
What is H₂O = water, H₂O₂ = hydrogen peroxide. What is Subscripts change the entire compound.
What is the formula for magnesium and chlorine?
What is MgCl₂.
Name the compound with the formula CO₂.
What is Carbon dioxide.
Name the compound Li₂O.
What is Lithium oxide
Which type of compound is usually brittle and dissolves in water to conduct electricity?
What is Ionic compounds
Using the crisscross method, what is the formula for aluminum and oxygen?
What is Al₂O₃
What happens when a metal atom loses electrons?
What is a positive ion (cation).
What does the prefix “tetra-” mean in covalent naming? Give an example.
What is Tetra = 4. Example: CCl₄ is carbon tetrachloride.
Name the covalent compound N₂O₅.
What is Dinitrogen pentoxide.
Why does salt (NaCl) taste salty while sugar (C₆H₁₂O₆) tastes sweet?
What is Different bonding types give different structures and properties.
Why must formulas always be simplified to the lowest whole-number ratio?
What is to show the simplest true ratio of ions/atoms in a compound.
Give the formula for magnesium phosphate using the crisscross method.
What is Mg₃(PO₄)₂
Why do covalent compounds usually have lower melting and boiling points than ionic ones?
What is They have weaker forces between molecules.
Why is CO called “carbon monoxide” and not “monocarbon monoxide”?
What is The “mono-” prefix is dropped from the first element.
How does understanding bonding help explain why plastics are so versatile?
What is Plastics are covalent polymers with flexible, varied molecular structures.