-observations: studies driven by senses

-hypothesis: well-thought through explanationto an observation that's testable

-prediction: logical guess on what might happen during the experiment due to observation

-test: test your hypothesis and draw conclusions

what is the purpose of a control group?

-dependent variable: the item being measured

-independent variable: the factors that change

X-axis: independent variable

Y-axis: dependent variable

bar graph: when independent variables are categories

line graph: when independent variables have numbers

-title (figure #....)

-a scale that include all values (numbered evenly)

-axes are labeled with units

-order: organized structures in an organism

-regulation (homeostatsis): the ability to maintain internal conditions to survive

-growth and development: information passed from parents to offspring, which determines how the offspring will grow

-energy utilization: process where organisms obtain energy and uses it in daily activities

-response to enviroment: an organism's rection to stimuli in its enviroment

-reproduction: process of reproducing and making offsprings of it's own kind

-evolution: change in population over time

-ecosystem: all organisms,nonlivingthings, and physical components that effect the life of organisms

-community: all organisms in a particular ecosystem

-population: groups of individuals in a type of species that interact

-organism: an individual living organism

-organ system: organs that work together to perform a particular function

-organ: each is mad up of different types of tissue

-tissues: group of similar cells with a specific function

-cells: a unit of living matter, seperated from it's enviorment by a membrane

-organelle: functional compatments in a cell

-molecule: a cluster of atoms held together by chemical bonds

what is a proton?

what is an element?

a type of matter composed of atoms of the same kind

-chemical element: can't be broken down to form other substances

-trace element: elements that you don't need large amounts of but required to survive

an atom with a negative or positive charged atom formed from gaining or losing an electron

(-): anions

(+): CAT 

• ionic bond (weak): when an atom gains or loses an electron
• covalent bond (strong): when atoms share electrons
• polar covalent bond: when atoms share electrons unevenly

• hydrogen bond (very weak): when a hydrogen atom binds with a highly-electronegative atom

reactants and product

what are the properties of water and how are they important to life?

• cohesion: hydrogen bonded molecules that tend to stick together. Important to life because it moves water from the roots of a plant upward
• ability to moderate temperature: resistance to temperature change makes sure that our bodies of water dont freeze over and that underwater life don't die
• density: the density of water decrease as a solid so that ice doesn't sink and freeze large bodies of water
• universal solvent: acts as a dissolving agent found in all cells and our blood