Biology
Define the Excretory system
The organ system that includes kidneys, ureters, bladder, and urethra.
write a word equation for the reaction between zinc and sulfuric acid
zinc + sulfuric acid → zinc sulfate + hydrogen
state the difference between constructive and destructive interference in waves.
Constructive interference happens when two waves overlap in such a way that they combine to create a larger wave. Destructive interference happens when two waves overlap in such a way that they cancel each other out.
What is a meteorite?
A meteor that has landed on the surface of the earth.
How is the ionic bond different from the covalent bond?
An ionic bond is formed when atoms lose or gain an electron (or electrons) but a covalent bond is formed when atoms share electrons.
list three ways thermal energy can be transferred from one place to another.
Conduction
Convection
Radiation
Define Stomata
small holes in the epidermis of a leaf, which allows gasses to diffuse in and out of the leaf.
What is an ION?
An atom that has lost or gained one or more electrons AND has an electric charge.
What is the difference between heat and temperature?
Temperature is a measure of the average kinetic energy of the atoms or molecules in the system.
Heat is the SUM of all Kinetic energy of the atoms or molecules in the system.
Define Photosynthesis
How plants make glucose and oxygen from carbon dioxide and water using energy from light.
What is the trend in the boiling points of the group 1 elements?
The boiling points decrease as you go down the group.
Define Density
Density is the measure of how much “stuff” is in a given amount of space
Density is the substance's mass per unit of volume.
Density = Mass / Volume
List three substances that move from the mother's blood into her Fetus's blood
oxygen and any nutrients, such as water, glucose, vitamins, minerals
define displacement reaction.
a reaction in which a more reactive metal pushes out a less reactive one from a compound.
State the law of conservation of energy
Energy cannot be created or destroyed.