Naming Compounds
The name of NaCl.
What is sodium chloride?
The two main types of matter.
What are pure substances and mixtures?
True or False — Boiling water is a chemical change
What is false? It’s a physical change.
T/F — Electrons are located in the nucleus.
What is false? They are in energy levels around the nucleus.
The name for electrons in the outermost shell.
What are valence electrons?
The correct formula for carbon dioxide.
What is CO₂?
A pure substance contains only one type of
What is true?
A change where no new substance is made.
What is a physical change?
The number of electrons in a neutral fluorine atom.
What is 9?
The name of the family in Group 1 of the periodic table.
What are alkali metals?
CO is called carbon dioxide.
What is false? It’s carbon monoxide.
The role of solute and solvent in a solution.
What is solute: the substance that dissolves. solvent: the substance doing the dissolving?
The type of change occurs when ice melts into water.
What is a physical change?
The number of neutrons in a carbon-14 atom.
What is 8?
True or False — Ionic bonds involve sharing electrons.
What is false? They involve transferring electrons.
The correct name for CuO
What is copper(II) oxide?
The difference between a homogeneous and a heterogeneous mixture.
What is homogeneous: looks uniform; heterogeneous: visibly different parts?
The type of change when paper burns, and why.
What is a chemical change, because a new substance forms (ash and smoke)
The Bohr-Rutherford diagram structure of a sodium ion.
What is 2 electrons in the first shell, 8 in the second, for a total of 10 electrons with a +1 charge?
The reason noble gases are unreactive.
What is because they have full outer electron shells?
Ti: The name of Ca₃(PO₄)₂ and the reason for the subscript numbers.
What is calcium phosphate? Because 3 calcium ions (Ca²⁺) balance 2 phosphate ions (PO₄³⁻).
Ti: What happens if more solute is added to a saturated solution?
What is the solute will not dissolve and will settle at the bottom?
Ti: A campfire is burning, and the wood turns black while heat is released. Explain what type of change this is and why.
What is a chemical change? Because a new substance forms and heat is given off.
Ti: The reason why ions are generally more stable than neutral atoms.
What is because they have full valence shells?
Ti: A magnesium atom loses 2 electrons. What is its ion charge and what is this type of ion called?
What is a +2 charge, and it’s called a cation?