Chemical Reactions and Matter
A rearrangement of atoms into new molecules
What is a chemical reaction?
The tool we use to measure temperature
What is a thermometer?
The body system responsible for breaking down food
What is the digestive system?
The source of energy for all plants
What is the Sun?
The study of living things and how they interact with living and nonliving components of their environment
What is ecology?
Anything that has mass and takes up space
What is matter?
The metric units for temperature
What are degrees Celsius?
The organ responsible for absorbing most nutrients from food
What is the small intestine?
The process that allows plants to make energy for their cells from sunlight
The struggle for resources that allow organisms to live
What is competition?
What is mass?
The average kinetic energy of a substance
What is temperature?
The place where chemical digestion starts
What is the mouth?
The part of plant cells where photosynthesis happens
What are chloroplasts?
The number of living things of a given species in a specific area.
What is a population?
The metric units for mass
What are grams?
In an engineering design project, the standards that need to be met by a design solution
What are criteria?
Amylase is an example of this, a substance that helps make chemical reactions happen
What is an enzyme?
The main source of mass for plants as they grow
What is air/carbon dioxide from the air?
The effect on a population if the birth rate is lower than the death rate
What is decrease?
The inputs and outputs of a chemical reaction, respectively
What are reactants and products, respectively?
Energy can never be created nor destroyed; only transferred or transformed
What is the Law of Conservation of Energy?
The inputs and outputs in cellular respiration, respectively
What are glucose and oxygen, and carbon dioxide and water, respectively?
The inputs and outputs in photosynthesis, respectively
What are oxygen and glucose, and carbon dioxide and water vapor, respectively?
A normal variation in the size of a stable population over time
What are fluctuations?