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What are the steps of conducting an experiment

3.Research/gather data
5.Conclusion is


What is a hypothesis

Educated guess


What is a controlled experiment

When only one variable is changed at a time in an experiment


Why do scientists publish their experiments

So scientists can test one another's investigations and see the work that's been done


What is a theory

A hypothesis that becomes so well supported that scientists consider it a theory


What is biology

The science that seeks to understand the living world


What are 5 characteristics of living things

1. Made up of units called cells
2. Reproduce
3. Respond to their environment
4. Grow and develop
5. Change over time


What is homeostasis

When organisms keep stable internal conditions


What is metabolism

When an organism builds up or breaks down materials as it carries out its life processes


What are all of the microscopes and their definitions

Regular microscope- helps see structures that are too small to see with an unaided eye
Compound might microscope- allow light to pass through the specimen and use two lenses to form an image
TEMS- shine a beam of electrons through a thin specimen
SEMS- scan a narrow beam of electrons back and forth across the surfaces of objects


What is cell culture

Where a group of cells originates from a single cell


What is cell fractionation

Separates different cell parts


What is an inference

A logical interpretation of data


What is a cell

The basic unit of life


What Is the metric system and why is it used

A decimal system of measurement whose units are based on certain physical standards and are scaled on multiples of 10; they need to replicate each other's experiments and most experiments involve measurements


What is data

Information that is gathered


What was redi trying to prove and how did he prove it

He was trying to prove that keeping flies away from meat would prevent the appearance of maggots. He proved this by conducting an experiment that includes having 4 uncovered jars of meat and 4 covered jars of meat meat and seeing if the uncovered jars attract maggots. The answer is yes.


What is spontaneous generation

The idea that life could arise from non living matter


What is a responding variable

The variable that is observed and that changes in response to the manipulated variable


What is a manipulated variable

The variable that is deliberately changed


Why is it important to only test one variable at a time

So that you know what's affecting the change in the experiment


What are the 3 particles that make up an atom and what are their charges

Protons- positive
Neutrons- neutral
Electrons- negative


Where are all 3 particles located in an atom

The protons and neutrons are inside the nucleus and the electrons are orbiting outside the nucleus


What is the goal of science and what is it not

To investigate and understand the natural world; not something that you can't prove


How do you find the number of protons neutrons and electrons

Protons= the atomic number
Electrons= the same number as the protons
Neutrons= subtract the number of protons ms from the atomic mass number(round the mass number to the nearest whole number)


What are isotopes

atoms of the same element that differ in the number of neutrons they contain


What is an atom and what is the Greek word for it

A basic unit of matter; atomos


What is an element

A pure substance that consists entirely of one type of atom


What are the first 10 elements and their atomic mass



What are covalent and ionic bonds

An ionic bond is formed when one or more electrons are transferred from one atom to another. A covalent bond forms when electrons are shared between atoms.