Chemistry
What is the chemical symbol for water?
H₂O
What is the basic unit of life?
a cell
What is the force that pulls objects toward the Earth?
gravity
What safety equipment is essential when handling chemicals?
goggles
What is the main gas in the Earth's atmosphere?
nitrogen
What do you call a substance made of two or more elements chemically bonded together?
a compound
What process do plants use to convert sunlight into energy?
photosynthesis
What is the term for the energy of motion?
kinetic energy
What is the purpose of a Bunsen burner?
to heat substances
What is the study of heredity called?
genetics
What is the pH level of pure water?
7
What is the term for a group of organisms of the same species living in the same area?
a population
What law states that for every action, there is an equal and opposite reaction?
Newton's Third Law of Motion
What do you call the process of separating mixtures based on different boiling points?
distillation
Who is known as the father of modern physics?
Albert Einstein
Which gas is produced during photosynthesis?
oxygen
What organ in the human body is responsible for pumping blood?
the heart
What unit is used to measure electrical resistance?
an ohm
In a scientific experiment, what is the variable that is changed called?
the independent variable
What is the scientific method?
a systematic way of investigating phenomena
What is the periodic table?
a chart that organizes all known elements
What type of macromolecule are enzymes?
proteins
What is the speed of light in a vacuum?
299,792 kilometers per second
What is the purpose of a control group in an experiment?
to compare against the experimental group
What is the name of the first vaccine created by Edward Jenner?
the smallpox vaccine