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

Safety Never use broken glassware Never use broken glassware

Safety Always ask your teacher or consult MSDS about chemical or procedures Always ask your teacher or consult MSDS about chemical or procedures

Safety Never use broken glassware Never use broken glassware Always ask your teacher or consult MSDS about chemical or procedures Always ask your teacher or consult MSDS about chemical or procedures Loose sleeves and lose hair will catch on fire Loose sleeves and lose hair will catch on fire

Safety Never use broken glassware Never use broken glassware Always ask your teacher or consult MSDS about chemical or procedures Always ask your teacher or consult MSDS about chemical or procedures Loose sleeves and lose hair will catch on fire Loose sleeves and lose hair will catch on fire Oxygen makes fires burn faster Oxygen makes fires burn faster

Safety Never use broken glassware Never use broken glassware Always ask your teacher or consult MSDS about chemical or procedures Always ask your teacher or consult MSDS about chemical or procedures Loose sleeves and lose hair will catch on fire Loose sleeves and lose hair will catch on fire Oxygen makes fires burn faster Oxygen makes fires burn faster Do not throw water on a grease fire, it spreads the grease, which spreads the fire Do not throw water on a grease fire, it spreads the grease, which spreads the fire

Safety Add acid to water not water to acid (A……..W) think of the alphabet, A comes before W. Add acid to water not water to acid (A……..W) think of the alphabet, A comes before W.

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

Safety Add acid to water not water to acid (A……..W) think of the alphabet, A comes before W. Add acid to water not water to acid (A……..W) think of the alphabet, A comes before W. To smell something (use wafting) To smell something (use wafting) Wash off chemical on skin (15 minutes) Wash off chemical on skin (15 minutes)

Safety Add acid to water not water to acid (A……..W) think of the alphabet, A comes before W. Add acid to water not water to acid (A……..W) think of the alphabet, A comes before W. 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 in broken glass receptacle Use a dustpan for broken glass and put in broken glass receptacle

Safety Add acid to water not water to acid (A……..W) think of the alphabet, A comes before W. Add acid to water not water to acid (A……..W) think of the alphabet, A comes before W. 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 in broken glass receptacle Use a dustpan for broken glass and put in broken glass receptacle Do not put chemical back into container (contamination) Do not put chemical back into container (contamination)

Safety Never switch caps or labels on chemicals Never switch caps or labels on chemicals

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

Safety Never switch caps or labels on chemicals Never switch caps or labels on chemicals If chemicals get in eyes, flush (15 minutes) If chemicals get in eyes, flush (15 minutes) Bunsen burner flames can get up to 1000 degrees. Bunsen burner flames can get up to 1000 degrees.

Safety Never switch caps or labels on chemicals Never switch caps or labels on chemicals If chemicals get in eyes, flush (15 minutes) If chemicals get in eyes, flush (15 minutes) Bunsen burner flames can get up to 1000 degrees. Bunsen burner flames can get up to 1000 degrees. If your clothes catch on fire, stop….drop….and roll….. If your clothes catch on fire, stop….drop….and roll…..

Safety Never switch caps or labels on chemicals Never switch caps or labels on chemicals If chemicals get in eyes, flush (15 minutes) If chemicals get in eyes, flush (15 minutes) Bunsen burner flames can get up to 1000 degrees. Bunsen burner flames can get up to 1000 degrees. If your clothes catch on fire, stop….drop….and roll….. If your clothes catch on fire, stop….drop….and roll….. If your friend catches on fire, get the fire blanket to smother the fire’s oxygen supply If your friend catches on fire, get the fire blanket to smother the fire’s oxygen supply

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

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

Measurement On a triple beam balance, look at where the arrow points and add all the numbers that the arrows are pointing to……together. On a triple beam balance, look at where the arrow points and add all the numbers that the arrows are pointing to……together. Graduated cylinders can measure things close to 1% of the actual measurement. Graduated cylinders can measure things close to 1% of the actual measurement. Beakers can measure things close to 5% of the actual measurement. (used for mixing and transporting….not for accurate measurement) Beakers can measure things close to 5% of the actual measurement. (used for mixing and transporting….not for accurate measurement)

Measurement On a triple beam balance, look at where the arrow points and add all the numbers that the arrows are pointing to……together. On a triple beam balance, look at where the arrow points and add all the numbers that the arrows are pointing to……together. Graduated cylinders can measure things close to 1% of the actual measurement. Graduated cylinders can measure things close to 1% of the actual measurement. Beakers can measure things close to 5% of the actual measurement. (used for mixing and transporting….not for accurate measurement) Beakers can measure things close to 5% of the actual measurement. (used for mixing and transporting….not for accurate measurement) Pipets are the most precise, measures things drop by drop Pipets are the most precise, measures things drop by drop

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

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

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

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

Experiments Independent variables are on the X- axis (along the bottom) Independent variables are on the X- axis (along the bottom) Dependent Variables are on the Y axis (along the side) Dependent Variables are on the Y axis (along the side) To remember…Make an I out of the line and write the word across…. To remember…Make an I out of the line and write the word across….

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

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

Experiments Quantitative Data is numbers (50 mg, 50 ml) Quantitative Data is numbers (50 mg, 50 ml) Qualitative Data is descriptions (red, smooth) Qualitative Data is descriptions (red, smooth) Independent variable (you change..you are in control of this) Independent variable (you change..you are in control of this)

Experiments Quantitative Data is numbers (50 mg, 50 ml) Quantitative Data is numbers (50 mg, 50 ml) Qualitative Data is descriptions (red, smooth) Qualitative Data is descriptions (red, smooth) Independent variable (you change..you are in control of this) Independent variable (you change..you are in control of this) Dependent variable (changes depending on what you set as the independent variable) Dependent variable (changes depending on what you set as the independent variable)

Experiments Quantitative Data is numbers (50 mg, 50 ml) Quantitative Data is numbers (50 mg, 50 ml) Qualitative Data is descriptions (red, smooth) Qualitative Data is descriptions (red, smooth) Independent variable (you change..you are in control of this) Independent variable (you change..you are in control of this) Dependent variable (changes depending on what you set as the independent variable) Dependent variable (changes depending on what you set as the independent variable) Controls – you don’t experiment on these (give a placebo (sugar pill instead of medicine), keep a plant out in the sun to compare to your plant in the closet) Controls – you don’t experiment on these (give a placebo (sugar pill instead of medicine), keep a plant out in the sun to compare to your plant in the closet)

Calculations Mean means the average (you add the numbers all up and divide by the amount of numbers) 3,4,5 (3+4+5) = 12 12/3 = 4 Mean means the average (you add the numbers all up and divide by the amount of numbers) 3,4,5 (3+4+5) = 12 12/3 = 4

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

Calculations Mean means the average (you add the numbers all up and divide by the amount of numbers) 3,4,5 (3+4+5) = 12 12/3 = 4 Mean means the average (you add the numbers all up and divide by the amount of numbers) 3,4,5 (3+4+5) = 12 12/3 = 4 Mode is the number that is listed the most so out of 5, 5, 6, 6, 7, 7, 8, 8, 8, 9……8 would be mode since it 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 would be mode since it is listed the most Median is the middle so you put all the numbers from smallest to largest and find the middle of all the numbers. (3,4,8,2,1) would be arranged (1,2,3,4,8) and the middle would fall be the number 3. If they is an even number of numbers you have to take the 2 numbers in the middle, add them together, and divide by 2. Median is the middle so you put all the numbers from smallest to largest and find the middle of all the numbers. (3,4,8,2,1) would be arranged (1,2,3,4,8) and the middle would fall be the number 3. If they is an even number of numbers you have to take the 2 numbers in the middle, add them together, and divide by 2.

Calculations Mean means the average (you add the numbers all up and divide by the amount of numbers) 3,4,5 (3+4+5) = 12 12/3 = 4 Mean means the average (you add the numbers all up and divide by the amount of numbers) 3,4,5 (3+4+5) = 12 12/3 = 4 Mode is the number that is listed the most so out of 5, 5, 6, 6, 7, 7, 8, 8, 8, 9……8 would be mode since it 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 would be mode since it is listed the most Median is the middle so you put all the numbers from smallest to largest and find the middle of all the numbers. (3,4,8,2,1) would be arranged (1,2,3,4,8) and the middle would fall be the number 3. If they is an even number of numbers you have to take the 2 numbers in the middle, add them together, and divide by 2. Median is the middle so you put all the numbers from smallest to largest and find the middle of all the numbers. (3,4,8,2,1) would be arranged (1,2,3,4,8) and the middle would fall be the number 3. If they is an even number of numbers you have to take the 2 numbers in the middle, add them together, and divide by 2.

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

Comparison/Contrast charts To compare is to look at similarities…..to contrast is to look at differences

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

Temperature Here are the temperature conversions Here are the temperature conversions C=(F-32) * F=( * C) + 32 Here are common know temp facts… Water Freezes (32 F or below and 0 C or below) Water boils at (212 F or above and 100 C or above) Water boils at (212 F or above and 100 C or above)