Week One
This is a pure substance made of only one type of atom.
What is an element?
These positively charged particles are found in the nucleus and determine an element’s identity.
What are protons?
This is the chemical symbol for calcium.
What is Ca?
This is the part of a chemical equation that shows the starting substances.
What are reactants?
This is the substance that does the dissolving in a solution.
What is the solvent?
This is a group of two or more atoms chemically bonded together, forming the smallest unit of a substance that keeps its chemical properties.
What is a molecule?
Compared to the entire atom, this part is extremely small but contains most of the atom’s mass.
What is the nucleus?
This number tells you how many protons an element has.
What is the atomic number?
A chemical equation is considered correct only when this is true.
What is it balanced?
This unit measures the energy your body gets from food.
What is a calorie?
This type of mixture has particles evenly distributed and does not separate over time.
What is a solution?
This type of substance donates hydrogen ions (H⁺) in a solution and often tastes sour.
What is an acid?
This fact determines whether an element is solid, liquid, or gas at room temperature.
What is its state of matter?
This law states that matter is not created or destroyed in a chemical reaction.
What is the Law of Conservation of Mass?
This macronutrient has the highest calories per gram.
What is fat?
This common baking ingredient is another name for sodium bicarbonate.
What is baking soda?
When an atom gains or loses electrons, it becomes this.
What is an ion?
This term describes the amount of disorder or randomness in a system.
What is entropy?
This tells you how many grams are in one mole of a substance.
What is the molar mass (g/mol)?
This state of matter has no fixed shape or volume.
What is a gas?
This temperature marks the beginning of caramelization during baking.
What is around 320°F (160°C)?
The balance (or imbalance) of these three particles determines whether an atom is stable, charged, or an isotope.
What are protons, neutrons, and electrons?
This term describes the total energy of a system and how that energy changes during a reaction.
What is enthalpy?
This number represents how many particles are in one mole.
What is Avogadro’s number (6.02 × 10²³)?
This is the substance that gets dissolved in a solution.
What is the solute?