Term
what is the scientific method and what all of its steps?
give examples
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Definition
the scientific method is a method of procedure that has characterized natural science since the 17th century.
step 1:observation
step 2: problem
step 3: hypotesis
step 4:experiment
step 5:conclusion |
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Term
what is a controlled experiment, and why is it important?
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Definition
a controlled experiment is a ascience experiment with a control subject.
the control in an experiment is the means of measurement that you use to compare the results to.
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Term
convert
the
following
to scientific notation
3.1x10^7 |
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Definition
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Term
what are the basic SI (metric) units for mass, temperature, length, and volume. |
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Definition
mass: grams
temperature: celcius
length: meter
volume: |
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Term
| What are the values and meanings of kilo, hecto, deka, deci, centi and milli? |
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Definition
Kilo: 1,000
hecto: 100
deka: 10
Deci: .10
Centi: .010
mili: .0010 |
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Term
| Know the basic tools for measuring mass, temperature, length, volume, and etc. |
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Definition
Mass: tipple beam balance
temperature: thermometer
length: meter stick
Volume: graduated cylinder |
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Term
Convert the following measurements:
2500mm to dkm
.034hg to cg |
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Definition
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Term
| What is the conversimass? Why is important? |
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Definition
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Term
| In the compound Al2(SO4)3 how many atoms are in the compound? How many oxygen atoms? |
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Definition
| There are 14 atoms 12 being oxygen |
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Term
| Tell me which of the following are chemical or physical changes: freezing point, density, rusting iron, cooking eggs, Burning wood dissolving salt and buoyancy |
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Definition
Freezing point: physical
density: physical
rusting iron: chemical
cooking eggs: physical
burning wood: chemical
dissolving salt: physical
buoyancy: physical
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Term
| What is always true about the density of a substance? |
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Definition
| Pure substances have the same density when measured under the same conditions |
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Term
Explain the difference between a pure substance and a mixture.
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Definition
| A pure substance has one kind of a element, whereas a mixture has more than one. |
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Term
| What are the parts of a solution? |
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Definition
A heterogeneous mixture composed of only 1 phase.
example of this would be kool aid, chocolate milk, and saltwater. |
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Term
| What are three waas you can dissolve a solive faster? Give all three |
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Definition
| Adding heat to the water, changing the surface area (or crushing or breaking it up) and stirring. |
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Term
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Definition
| Anything that has mass and takes up space |
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Definition
A mixture where you can't see what it's made of.
kool aid. |
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Term
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Definition
| A rotating neutron star that let's off electromagnetic radiation |
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Term
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Definition
| Where a solvent dissolves in a liquid |
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Term
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Definition
One of four states of matter, in which the molecules vibrate about fixed positions and cannot migrate to other positions in the substance. Unlike a gas or liquid, a solid has a fixed shape, and unlike a gas, a solid has a fixed volume. In most solids (with exceptions such as glass), the molecules are arranged in crystal lattices of various sizes. |
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Definition
| The number of protons in the nucleus of an atom. |
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Term
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Definition
| A negatively charged particle. |
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Term
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Definition
| The abbreviation that represents an element on the periodic table of elements |
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Term
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Definition
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Term
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Definition
| The overall force acting on an object |
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Term
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Definition
| A force acting upon objects in contact with eachother creates a resistance to change in motion |
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Term
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Definition
| The motion of an object around a point |
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Definition
| A model created by Copernicus that demonstrate how all the planets revolve around the sun, including earth |
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Definition
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Definition
| The change from liquid to gas with added heat |
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Term
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Definition
| the point in which solid turns to liquid. |
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Definition
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Definition
He did everything to teach Alexander the great, to starting a school.
He also created the scientific method, which is more prominent in our studies. |
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Term
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Definition
| Created three laws of motion, among other things. |
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Term
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Definition
Father of the periodic table of elements.
created and organized them By their properties. |
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Definition
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Definition
| Created the Bohr model of an atom, showing all the electrons in The electron cloud. |
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Definition
| Observed phases of the moon |
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