1 / 20

Bell Ringer 9/19 & 9/20 – pg. 16

Bell Ringer 9/19 & 9/20 – pg. 16. PLEASE DATE BELL WORK!!!

jeri
Télécharger la présentation

Bell Ringer 9/19 & 9/20 – pg. 16

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Bell Ringer 9/19 & 9/20 – pg. 16 PLEASE DATE BELL WORK!!! SI is built upon seven metric units, known as __(1)__. In SI, the base unit for __(2)__, or the straight line distance between two points, is the __(3)__. The base unit for __(4)__, or the quantity of __(5)__ in an object or sample, is the __(6)__. ALL BAGS ON FLOOR PLEASE!!!

  2. Bell Ringer 9/21– pg. 19 PLEASE DATE BELL WORK!!! Another important quality in measurement is __(1)__. Accuracy is the closeness of a measurement to the actual __(2)__ or what is being measured. For example, suppose the digital clock is running 15 minutes slow. Although the __(3)__ would remain __(4)__ to the nearest second, the __(5)__ displayed would not be __(6)__. ALL BAGS ON FLOOR PLEASE!!!

  3. Bell Ringer -9/24 – pg. 47 PLEASE DATE BELL WORK!!! __(1)__ can be used to test the purity of a substance. Recall that density is the ratio of the __(2)__ of a substance to its __(3)__. At room temperature, silver has a density of 10.5 g/cm3. If a coin has a density of __(4)__ at room temperature , either the coin is not made from __(5)__ or the coin contains substances in addition to the silver. ALL BAGS ON FLOOR PLEASE!!!

  4. Bell Ringer - 9/25 – pg. 39 & 40 PLEASE DATE BELL WORK!!! Matter that always has the same __(1)__ is classified as a pure substance or simple a substance. An element is a __(2)__ that cannot be broken down into simpler pieces. An atom is the __(3)__ particle of an element. A compound is a substance that is made from two or more __(4)__ substance and can be broken down into those simpler substances. ALL BAGS ON FLOOR PLEASE!!!

  5. Bell Ringer – 9/26 & 9/27 PLEASE DATE BELL WORK!!! Peter is curious what type of candy is the densest. He decides to buy three types of candy to test and measures their volume and mass. • What is the IV in the experiment? • What is the DV? • What formula will he use to find the density of the candy? ALL BAGS ON FLOOR PLEASE!!!

  6. Bell Ringer 9/28 – pg. 39 & 40 PLEASE DATE BELL WORK!!! Every sample of a given substance has the same __(1)__ because a substance has a fixed, uniform __(2)__. Substances can be classified into two categories--__(3)__ and __(4)__. An element is a __(5)__ that cannot be broken down into simpler pieces. An atom is the __(6)__ particle of an element ALL BAGS ON FLOOR PLEASE!!!

  7. Bell Ringer 9/19 – pg. 40 PLEASE DATE BELL WORK!!! Water is classified as a __(1)__. A compound is a substance that is made from __(2)__ or more simpler substances and can be broken down into those simpler __(3)__. The simpler substances are either __(4)__ or compounds. The properties of a compound differ from those of substances from which it is made. For instance, hydrogen and __(5)__ are gases at room temperature, but water is a __(6)__. ALL BAGS ON FLOOR PLEASE!!!

  8. Bell Ringer 9/20 – pg. 41 PLEASE DATE BELL WORK!!! Mixtures tend to retain some of the __(1)__ of their individual substances. But the properties of a __(2)__ are less constant than the properties of a substance. The properties of a mixture can __(3)__ because the __(4)__ of a mixture is not __(5)__. ALL BAGS ON FLOOR PLEASE!!!

  9. Bell Ringer 9/21 & 9/22 – pg. 41 & 42 PLEASE DATE BELL WORK!!! Sand is an example of a __(1)__ mixture. Heterogeneous comes from the Greek words hetero and genus, meaning __(2)__ and kind. In a heterogeneous mixture, the parts of the __(3)__ are noticeably different. The water in a swimming pool is a __(4)__ mixture of water and substances that dissolve in water. In a homogeneous mixture, the substances are so evenly distributed that it is difficult to __(5)__ one substance in the mixture from another. ALL BAGS ON FLOOR PLEASE!!!

  10. Bell Ringer 9/23 – pg. 45 PLEASE DATE BELL WORK!!! A __(1)__ is any characteristic of a material that can be observed or measured without changing the __(2)__ of the substances in the material. __(3)__, conductivity, __(4)__, hardness, melting point, boiling point, and __(5)__ are examples of physical properties. ALL BAGS ON FLOOR PLEASE!!!

  11. Bell Ringer 9/26 – pg. 54 PLEASE DATE BELL WORK!!! As a candle burns, the __(1)__ combine with oxygen in the air to form water and __(2)__. The ability to burn is a __(3)__. A chemical property is any ability to produce a change in the __(4)__ or matter. Chemical properties can be observed only when the substances in a sample of __(5)__ are __(6)__. ALL BAGS ON FLOOR PLEASE!!!

  12. Bell Ringer – 10/7 – Need Calculator PLEASE DATE BELL WORK!!! • Calculate the density of a hunk of metal if the density is 4.0 g/ml and the volume is 44.2 ml? ALL BAGS ON FLOOR PLEASE!!!

  13. Bell Ringer - 9/30 – pg. 48 & 49 PLEASE DATE BELL WORK!!! • Properties determine which __(1)__ are chosen for which uses. For example, you wouldn’t want __(2)__ made from wood. Shoelaces must be __(3)__, that is, they must be able to bend without breaking. The must also be __(4)__, that is, they must be able to withstand repeated use. 5) On pg. 49, which materials are used to make the sculpture? ALL BAGS ON FLOOR PLEASE!!!

  14. Bell Ringer – 10/4 – pg. 56 PLEASE DATE BELL WORK!!! Figure 18 shows what happens to banana peels as bananas ripen. The __(1-two words)__ in a banana peel is caused by __(2-two words)__ taking place in the cells of the banana. A chemical change occurs when a substance __(3)__ and forms one or more __(4-two words)__. Chemical changes occur when a cake is baked, leaves on trees change color, and __(5-six words)__. ALL BAGS ON FLOOR PLEASE!!!

  15. Bell Ringer – 10/5 & 10/6 – pg. 58 PLEASE DATE BELL WORK!!! It is not always easy to distinguish a __(1)__ change from a physical change. Even if you observe a __(2)__ change, a __(3)__, or a precipitate, you cannot be sure that a chemical change has taken place. When the iron __(4)__ in the figure is heated, its color changes from __(5)__ to red. Despite this change in color, the __(6)__ is still iron. ALL BAGS ON FLOOR PLEASE!!!

  16. Bell Ringer – 9/30 PLEASE DATE BELL WORK!!! • Grab a scantron form from the front tables. • Write name on scantron. • For subject please write “Common Assessment #1”. • At the top please fill in your ID number (skipping the last two boxes) and fill in the appropriate bubbles. ALL BAGS ON FLOOR PLEASE!!!

  17. Bell Ringer – 10/30 – Need Calculator • Calculate the mass of a hunk of metal if the density is 4.0 g/ml and the volume is 44.2 ml? • When you are finished, please grab a clicker from the front.

  18. Bell Ringer – 10/10 – pg. 58 PLEASE DATE BELL WORK!!! Before you decide whether or not a __(1)__ change has occurred, ask yourself this question: Are different __(2)__ present after the change take place? If not, then the change is __(3)__, not __(4)__. When __(5)__ undergoes a chemical change , the composition of the matter __(6)__. When matter undergoes a physical change, the composition of the matter __(7)__ the same. ALL BAGS ON FLOOR PLEASE!!!

More Related