Information about SAS Curriculum Density #11-Day 3

Published on February 24, 2014

Author: jmori

Source: slideshare.net

Reminders 1) Record earned points on Assignment Log #1 2) Check Your Grades – Progress Notices to be passed out on Wednesday 3) SAS Curriculum – Density #11 + Problems –Due Tomorrow. 4) Test #1 and Binder Check #1 – Due Thursday

Binder Check #1 & Test #1 1) Table of Contents is on-line 1) Edit out my notes to you 2) Organize Papers in the order of the ToC 3) Number pages – Like a book 2) Test #1– Target Concepts on-line to review 1) Create ½ page of notes, done by hand, front side only 2) You will have 1 class period to complete the test

Table 1: Data for objects 1-4 Object # 1 2 3 4 Mass (g) Initial Volume (mL) 5 5 5 Subtract Initial Volume from Final Volume 5 Final Volume (mL) Object Volume (mL)

Table 2: Data for Objects 5-11 Object # 5 6 7 8 9 10 Mass (g) Initial Volum e (mL) Final Object Volum Volum e (mL) e (mL) Density (g/mL) Water RESULTS (S= sink; F=floats) Ethano Gasoline Sea H2O SHOW WORK Subtract Final from Initial Divide Mass by Object Volume

Table of Densities Substance aluminum copper gasoline gold ice iron lead seawater wood (average value) Density (g/mL) 2.7 8.9 Subtract Final 0.68 Initial from 19.3 0.917 7.8 11.3 1.025 0.8 This table will help you with question #11

Table 3: Liquid Densities Liquid Color of Liquid Light 1. Water Blue Dark 2. Ethanol Blue Dark 3. Gasoline Green Light 4. Seawater Green Volume (mL) 5 5 Mass (g) Density (g/mL) Subtract Final from Initial 5 5 Mass divided by Volume = Density SHOW WORK

Find the density of the crown. 1.Is it real gold? 2.What is your evidence?

Practice and Review Gram Mass Unit Label = ___________ cm3 Volume Unit Label = _______, cc ________, ________ mL g/cm3 Density Unit Label = __________, g/mL g/cc __________, __________

Density Formulas 1) Identify the type of numbers you are given in the word problem. 2) Choose the correct version of the Density formula 1) Tip: If you are given the mass you will always DIVIDE 3) You may need to find VOLUME first!

Problem #1 1) Henry has a block of an unknown element with measurements of 5.8 cm on each side. It’s mass is 1645.9 grams. What is the element’s density? (10pts) – 2 step problem Is cm a “volume” unit? (Look at the labels at the top of your paper? NO You will need to find volume 1st. What method will you use? Method #2 – LxWxH because it is a REGULAR shaped object

Problem #1 1) Henry has a block of an unknown element with measurements of 5.8 cm on each side. It’s mass is 1645.9 grams. What is the element’s density? (10pts) – 2 step problem 5.8 x 5.8 x 5.8 = 195.11 cm 3

Problem #1 1) Henry has a block of an unknown element with measurements of 5.8 cm on each side. It’s mass is 1645.9 grams. What is the element’s density? (10pts) – 2 step problem What type of number is “grams”? (Look at the labels at the top of your paper? Mass Which version of the Density formula are you going to use….YOU have MASS and you’ve found the VOLUME? D = m/v

Problem #1 1) Henry has a block of an unknown element with measurements of 5.8 cm on each side. It’s mass is 1645.9 grams. What is the element’s density? (10pts) – 2 step problem 1645.9 divided by 195.11 = 8.44 g/cm3 Problem #4 – worth only 5 pts.

PROBLEMS – 7 AND 8 1) Remember – Density is how the particles are packed. 2) No matter the size(volume) of a substance… the particles will be “packed” the same way 3) Different substances have their particles “packed” differently. 4) Density is the comparison of these two measurements Copper Wood

Remember 1. SAS Curriculum – DENSITY #11 –Due Tomorrow at the beginning of the period. 2. Check your Grades Progress notices will be passed out on Wednesday 3. Binder Check & Test #1 on Thursday

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