7.1 Chemical Reactions & Matter
This is the smallest unit of matter that keeps the properties of an element.
What is an atom?
When one decision directly affects another decision and you can't do both things.
What is a trade-off?
These small molecules from food are broken apart and rearranged to release energy for the body.
What are glucose molecules?
Plants use this type of energy to power photosynthesis.
What is light enegy?
What is biodiversity?
When substances interact and form new substances with new properties, this has occured.
What is a chemical reaction?
A reaction that releases energy, often as heat or light, is called this.
What is exothermic?
The molecules your body breaks down for usable energy, such as glucose, were called this during the unit.
What are food molecules?
These two molecules enter a plant's leaves and are used to make glucose.
What are CO2 (Carbon Dioxide) and H2O (Water)?
These organisms break down dead matter and return nutrients to the ecosystem.
What are decomposers?
In a closed system, this quantity stays the same before and after a reaction.
What is mass?
A reaction that absorbs energy from the surroundings is called this.
What is endothermic?
This gas is required for cells to release energy from food during metabolic reactions.
What is oxygen?
This molecule that plants produce stores chemical energy that they can use for growth.
What is glucose?
A change in the number of predators can cause changes in prey populations. This is an example of what kind of relationship.
What is interdependence?
These rearrange during a chemical reaction, but are never created or destroyed.
What are atoms?
What is temperature?
When food molecules are broken apart, the atoms rearrange to form new molecules and release this.
What is energy?
The oxygen released by plants comes from this reactant.
What is water?
When a species can not survive changes in its environment, this may happen.
What is extinction?
While investigating the bath bomb, students found that the (CO2) gas produced was not present in the starting materials. Explain what happens to the atoms of the reactants during this process to create a new substance with different properties.
What is a chemical reaction. The atoms rearranged to form a new substance.
In the unit, we compared temperature changes to determine whether energy is released or absorbed. This type of evidence is called this.
This term describes the chemical reactions inside organisms that break down and build up molecules.
What is metabolism?
This cycle describes how carbon atoms move between the atmosphere, plants, animals, and decomposers.
What is the carbon cycle?
This term describes the ability of an ecosystem to maintain stability even when disturbed.
What is ecosystem resilience?