If possible, laminate the cards to help them last from year to year. Cookie Mystery Class Notes – I use this throughout the activity to guide students through the safety rules and testing procedures. Cookie Mystery Final Report Form – Set up with 4 forms per page; used to submit final results from each of the “reindeer teams”. Click here for thereindeer team labels I use to label the supplies tub for this activity. The atmosphere has had the same carbon-14 concentration in the past as now. The production rate of carbon-14 has always been the same in the past as now.
Using this information, we may be able to calculate how much carbon-14 was actually on the early earth at the Flood. This, in turn, would allow us to develop a proper interpretation of all carbon-14 dates. So the radiocarbon “puzzle” can be solved, but only in the biblical framework for earth history. Research is therefore underway to find a means of recalibrating the radiocarbon “clock” to properly account for the Flood and its impact on dates for the post-Flood period to the present.
Chemistry Lesson Plans
The conditions at time zero when the rock formed are, or can be, known. Because he knows the rate at which the sand falls , and assuming all the sand started in the top bowl, he is able to calculate that the “clock” evidently started half an hour ago. In an hourglass, grains of fine sand fall at a steady rate from the top glass bowl to the bottom.
My students have difficulty visualizing ionic and covalent bonds. In order to better help them understand the transferring or sharing of electrons, my student teacher, Lindsay Bogner, and I developed this new version that involves the use of atomic headbands and ping pong balls. Students use the ping pong balls as electrons and we demonstrate how each type of bond forms by either transferring ping pong balls from one headband to the other or by sharing ping pong balls between two headbands. Download the PPT to find the classroom notes to teach the lesson and a link to the digital worksheet for students created using Google Slides. For this project, students are required to research an element, create an advertisement, and complete an element fact sheet.
The blank periodic table worksheet for students and aMystery Element extension activity are also available. I created this project for fifth grade students in my school. After completing the Atoms Family lesson and Atomic Math Challenge, students use their knowledge of the elements to create trading cards. Students are also challenged to find pictures that illustrate the various uses for the elements. The pdf download includes project directions as well as templates for the cards.
Reproduction for commercial use or profit is not permitted without the consent of Tracy Tomm. Visit myFrequently Asked Questions page for more details. Playing with Polymers PPT – PowerPoint presentation that includes the information on the student note pages, link to the movie, and safety rules as well as directions for each of the slime tests on the recipe page listed below. Version 1 includes atomic number, atomic mass, number of subatomic particles, Bohr diagram, and Lewis Structure. Version 2 is the one I use with my 8th grade students and includes all of the items in Version 1 as well as phase , melting/boiling points, discovery information, properties, and common uses.
Phet dating game answers
Comparison of stable and unstable atoms of the element carbon. They have six protons in their nuclei and six electrons orbiting their nuclei, which gives carbon its chemical properties. It is the number of neutrons in their nuclei that varies, but too many neutrons make the nuclei unstable, as in carbon-14.
Fossils and Radioactive Dating
The atoms in each chemical element may vary slightly in the numbers of neutrons within their nuclei. These slightly different atoms of the same chemical element are called isotopes of that element. However, while the number of neutrons varies, every atom of any chemical element always has the helpful site same number of protons and electrons. So, for example, every carbon atom contains six protons and six electrons, but the number of neutrons in each nucleus can be six, seven, or even eight. Therefore, carbon has three isotopes, which are specified as carbon-12, carbon-13 and carbon-14 .
They learn what coefficients and subscripts represent as the write expressions for each challenge. Download the teacher information page for more details. Periodic Table Coloring Activity – Download this file to walk your students through this activity that I use as a follow-up to the student-created periodic tables. Students explore the repeating patterns in the periodic table along with learning about the different classes and families of elements.
Additionally, a 4 page worksheet to practice radioactive decay. Chemists have already determined how many atoms are in a given mass of each element, such as carbon.4 So if we weigh a lump of carbon, we can calculate how many carbon atoms are in it. If we know what fraction of the carbon atoms are radioactive, we can also calculate how many radiocarbon atoms are in the lump.
Relative & Absolute Dating (Radioactive Decay)
Students complete fact cards on the first 18 elements. They use Internet sites or printed resources to find basic information , melting and boiling points, physical and chemical properties, and common uses as well as draw Bohr diagrams and Lewis structures for each element. Students also color code the fact cards before cutting them apart and arranging according to atomic number. After students have created a “mini” periodic table on a large sheet of construction paper, they use the information they have collected to answer questions related to periods, families, and properties. Download the PPT for a fun lesson to explore chemistry concepts involved in making hot chocolate.