| A | B |
|---|
| What are the building blocks of all matter? | atoms |
| The nucleus of an atom is made up of ____ and ____ | protons and neutrons |
| Electrons have a ___ charge | negative |
| Protons have a ___ charge | positive |
| Neutrons have a ___ charge | neutral (no) charge |
| Which type of particle orbits the nucleus? | electrons |
| Positive charges are attracted to ____ charges | negative |
| Positive charges are repelled by ____ charges | positive |
| Negative charges are repelled by ____ charges | negative |
| The large center region of an atom is called the ___ of the atom | nucleus |
| Each element is different because they have a different number of ____. | protons |
| All of the elements are listed in the ____. | periodic table |
| Two or more elements bond together to form ____. | compounds |
| How many oxygen atoms are in H20? | One (there are two hydrogens) |
| What is the chemical formula for a molecule of glucose? | C6H12O6 (the numbers should be subscripts) |
| In a chemical equation, the _____ are on the left side of the arrow. | reactants |
| In a chemical equation, the ___ are on the right side of the arrow. | products |
| The process of using energy from the sun to make food molecules like glucose is called ____. | photosynthesis, 
|
| Which two molecules are needed for photosynthesis to occur?,
| water and carbon dioxide,
|
| What are the waste products of cellular respiration?,
| carbon dioxide and water,
|
| What are the reactants of cellular respiration?,
| oxygen and glucose |
| Atoms or molecules that become charged because they gain or lose electrons are called ___. | ions |
| A uniform mixture of substances is know as a ___. | solution |
| In a glass of salt water, the ___ would be the solvent. | water |
| In a glass of salt water, the ___ would be the solute. | salt |
| In a solution of sugar and water, the sugar would be the ___. | solute |
| In a solution of sugar and water, the water would be the _____. | solvent |
| Acidic solutions have a pH that is ____ seven. | below |
| Basic solutions have a pH that is ___ seven. | above |
| Distilled water has a pH of ___. | seven |
| A liquid with a pH of 1 would be described as being ___. | strongly acidic |
| A liquid with a pH of 6 would be described as being ___. | weakly acidic |
| A liquid with a pH of 8 would be described as being ___. | weakly basic |
| A liquid with a pH of 13 would be described as being ___. | strongly basic |
| As temperature ____, particles move faster and faster | increases |
| As temperature ____ particles move slower and slower. | decreases |
| Increasing the ___ or ___ of the reactants will cause a reaction to speed up. | temperature, concentration |
| A(n) ______ is a substance that speeds up a chemical reaction without being changed by the reaction. | catalyst,
|
| A biological catalyst is known as ____.,
| an enzyme,
|
