Test Review (READ THE SCREEN) Ms. Cockrell lost her voice

Test ReviewTest Review

(READ THE SCREEN)(READ THE SCREEN)

Ms. Cockrell lost her voiceMs. Cockrell lost her voice

SafetySafety

Never use broken glasswareNever use broken glassware

SafetySafety

Never use broken glasswareNever use broken glassware Always ask your teacher or consult Always ask your teacher or consult

MSDS about chemical or proceduresMSDS about chemical or procedures

SafetySafety


MSDS about chemical or proceduresMSDS about chemical or procedures Loose sleeves and lose hair will catch Loose sleeves and lose hair will catch

on fireon fire

SafetySafety



on fireon fire Oxygen makes fires burn fasterOxygen makes fires burn faster

SafetySafety



on fireon fire Oxygen makes fires burn fasterOxygen makes fires burn faster Do not throw water on a grease fire, it Do not throw water on a grease fire, it

spreads the grease, which spreads the spreads the grease, which spreads the firefire

SafetySafety Add acid to water not water to acid Add acid to water not water to acid

(A……..W) think of the alphabet, A (A……..W) think of the alphabet, A comes before W.comes before W.



To smell something (use wafting)To smell something (use wafting)



To smell something (use wafting)To smell something (use wafting) Wash off chemical on skin (15 Wash off chemical on skin (15

minutes)minutes)



To smell something (use wafting)To smell something (use wafting) Wash off chemical on skin (15 Wash off chemical on skin (15

minues)minues) Use a dustpan for broken glass and Use a dustpan for broken glass and

put in broken glass receptacleput in broken glass receptacle



To smell something (use wafting)To smell something (use wafting) Wash off chemical on skin (15 minues)Wash off chemical on skin (15 minues) Use a dustpan for broken glass and put Use a dustpan for broken glass and put

in broken glass receptaclein broken glass receptacle Do not put chemical back into container Do not put chemical back into container

(contamination)(contamination)

SafetySafety

Never switch caps or labels on Never switch caps or labels on chemicalschemicals

SafetySafety


If chemicals get in eyes, flush (15 If chemicals get in eyes, flush (15 minutes)minutes)

SafetySafety



Bunsen burner flames can get up to Bunsen burner flames can get up to 1000 degrees.1000 degrees.

SafetySafety



Bunsen burner flames can get up to Bunsen burner flames can get up to 1000 degrees.1000 degrees.

If your clothes catch on fire, If your clothes catch on fire, stop….drop….and roll…..stop….drop….and roll…..

SafetySafety Never switch caps or labels on chemicalsNever switch caps or labels on chemicals If chemicals get in eyes, flush (15 If chemicals get in eyes, flush (15

minutes)minutes) Bunsen burner flames can get up to 1000 Bunsen burner flames can get up to 1000

degrees.degrees. If your clothes catch on fire, If your clothes catch on fire,

stop….drop….and roll…..stop….drop….and roll….. If your friend catches on fire, get the fire If your friend catches on fire, get the fire

blanket to smother the fire’s oxygen blanket to smother the fire’s oxygen supplysupply

MeasurementMeasurement

On a triple beam balance, look at where On a triple beam balance, look at where the arrow points and add all the the arrow points and add all the numbers that the arrows are pointing numbers that the arrows are pointing to……together.to……together.


On a triple beam balance, look at where On a triple beam balance, look at where the arrow points and add all the the arrow points and add all the numbers that the arrows are pointing numbers that the arrows are pointing to……together.to……together.

Graduated cylinders can measure Graduated cylinders can measure things close to 1% of the actual things close to 1% of the actual measurement.measurement.


On a triple beam balance, look at where On a triple beam balance, look at where the arrow points and add all the numbers the arrow points and add all the numbers that the arrows are pointing to……that the arrows are pointing to……together.together.

Graduated cylinders can measure things Graduated cylinders can measure things close to 1% of the actual measurement.close to 1% of the actual measurement.

Beakers can measure things close to 5% Beakers can measure things close to 5% of the actual measurement. (used for of the actual measurement. (used for mixing and transporting….not for mixing and transporting….not for accurate measurement)accurate measurement)


On a triple beam balance, look at where On a triple beam balance, look at where the arrow points and add all the numbers the arrow points and add all the numbers that the arrows are pointing to……together.that the arrows are pointing to……together.

Graduated cylinders can measure things Graduated cylinders can measure things close to 1% of the actual measurement.close to 1% of the actual measurement.

Beakers can measure things close to 5% of Beakers can measure things close to 5% of the actual measurement. (used for mixing the actual measurement. (used for mixing and transporting….not for accurate and transporting….not for accurate measurement)measurement)

Pipets are the most precise, measures Pipets are the most precise, measures things drop by dropthings drop by drop

MeasurementsMeasurements

Precision is when all the measurements Precision is when all the measurements are close together (3.5, 3.6, 3.54, 3.62, are close together (3.5, 3.6, 3.54, 3.62, 3.58) are all pretty close together so 3.58) are all pretty close together so they are precise.they are precise.

MeasurementsMeasurements

Precision is when all the measurements are Precision is when all the measurements are close together (3.5, 3.6, 3.54, 3.62, 3.58) are close together (3.5, 3.6, 3.54, 3.62, 3.58) are all pretty close together so they are precise.all pretty close together so they are precise.

Accuracy is when the measurements are far Accuracy is when the measurements are far off target you get (3.5, 3.6, 3.54, 3.62, 3.58) off target you get (3.5, 3.6, 3.54, 3.62, 3.58) but the mass was actually 10. You are but the mass was actually 10. You are precise in your measurements since they precise in your measurements since they were close together but no accurate since were close together but no accurate since you were way off target.you were way off target.

ExperimentsExperiments

Independent variables are on the X- Independent variables are on the X- axis (along the bottom)axis (along the bottom)



Dependent Variables are on the Y Dependent Variables are on the Y axis (along the side)axis (along the side)



Dependent Variables are on the Y Dependent Variables are on the Y axis (along the side)axis (along the side)

To remember…Make an I out of the To remember…Make an I out of the line and write the word across….line and write the word across….


Quantitative Data is numbers (50 mg, Quantitative Data is numbers (50 mg, 50 ml)50 ml)



Qualitative Data is descriptions (red, Qualitative Data is descriptions (red, smooth)smooth)




Independent variable (you change..you Independent variable (you change..you are in control of this)are in control of this)




Independent variable (you change..you Independent variable (you change..you are in control of this)are in control of this)

Dependent variable (changes Dependent variable (changes depending on what you set as the depending on what you set as the independent variable)independent variable)


Quantitative Data is numbers (50 mg, 50 Quantitative Data is numbers (50 mg, 50 ml)ml)


Independent variable (you change..you are Independent variable (you change..you are in control of this)in control of this)

Dependent variable (changes depending on Dependent variable (changes depending on what you set as the independent variable)what you set as the independent variable)

Controls – you don’t experiment on these Controls – you don’t experiment on these (give a placebo (sugar pill instead of (give a placebo (sugar pill instead of medicine), keep a plant out in the sun to medicine), keep a plant out in the sun to compare to your plant in the closet)compare to your plant in the closet)

CalculationsCalculations Mean means the average (you add the Mean means the average (you add the

numbers all up and divide by the numbers all up and divide by the amount of numbers) 3,4,5 (3+4+5) amount of numbers) 3,4,5 (3+4+5) = 12 12/3 = = 12 12/3 = 44


numbers all up and divide by the numbers all up and divide by the amount of numbers) 3,4,5 (3+4+5) amount of numbers) 3,4,5 (3+4+5) = 12 12/3 = = 12 12/3 = 44

Mode is the number that is listed the Mode is the number that is listed the most so out of 5, 5, 6, 6, 7, 7, 8, 8, 8, most so out of 5, 5, 6, 6, 7, 7, 8, 8, 8, 9……8 would be mode since it is listed 9……8 would be mode since it is listed the mostthe most


numbers all up and divide by the amount numbers all up and divide by the amount of numbers) 3,4,5 (3+4+5) = 12 12/3 of numbers) 3,4,5 (3+4+5) = 12 12/3 = = 44

Mode is the number that is listed the most Mode is the number that is listed the most so out of 5, 5, 6, 6, 7, 7, 8, 8, 8, 9……8 so out of 5, 5, 6, 6, 7, 7, 8, 8, 8, 9……8 would be mode since it is listed the mostwould be mode since it is listed the most

Median is the middle so you put all the Median is the middle so you put all the numbers from smallest to largest and find numbers from smallest to largest and find the middle of all the numbers. (3,4,8,2,1) the middle of all the numbers. (3,4,8,2,1) would be arranged (1,2,3,4,8) and the would be arranged (1,2,3,4,8) and the middle would fall be the number 3. If they middle would fall be the number 3. If they is an even number of numbers you have to is an even number of numbers you have to take the 2 numbers in the middle, add take the 2 numbers in the middle, add them together, and divide by 2.them together, and divide by 2.


numbers all up and divide by the amount numbers all up and divide by the amount of numbers) 3,4,5 (3+4+5) = 12 12/3 of numbers) 3,4,5 (3+4+5) = 12 12/3 = = 44

Mode is the number that is listed the most Mode is the number that is listed the most so out of 5, 5, 6, 6, 7, 7, 8, 8, 8, 9……8 so out of 5, 5, 6, 6, 7, 7, 8, 8, 8, 9……8 would be mode since it is listed the mostwould be mode since it is listed the most

Median is the middle so you put all the Median is the middle so you put all the numbers from smallest to largest and find numbers from smallest to largest and find the middle of all the numbers. (3,4,8,2,1) the middle of all the numbers. (3,4,8,2,1) would be arranged (1,2,3,4,8) and the would be arranged (1,2,3,4,8) and the middle would fall be the number 3. If they middle would fall be the number 3. If they is an even number of numbers you have to is an even number of numbers you have to take the 2 numbers in the middle, add take the 2 numbers in the middle, add them together, and divide by 2.them together, and divide by 2.

Important factsImportant facts

Observations in science are Observations in science are extremely important. You observe, extremely important. You observe, then you think, and then you think then you think, and then you think some more, and then and only some more, and then and only then……you can come up with a then……you can come up with a hypthesis about something.hypthesis about something.

Comparison/Contrast chartsComparison/Contrast charts

To To comparecompare is to look at is to look at similaritiessimilarities…..to …..to contrastcontrast is to look at is to look at differencesdifferences

WavesWaves

Radio waves can be up to a few Radio waves can be up to a few kilometers in length. Gamma waves kilometers in length. Gamma waves (Radiation) has very short (Radiation) has very short wavelengths. (BAD FOR YOU)wavelengths. (BAD FOR YOU)

Temperature Temperature Here are the temperature conversionsHere are the temperature conversions

C=(F-32) *C=(F-32) *

F=( * C) + 32 F=( * C) + 32

Here are common know temp facts…Here are common know temp facts…

Water Freezes (32 F or below and 0 C or Water Freezes (32 F or below and 0 C or below)below)

Water boils at (212 F or above and 100 Water boils at (212 F or above and 100 C or above)C or above)

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Test Review (READ THE SCREEN) Ms. Cockrell lost her voice