Other than lithium, whichĮlement from the Gizmo is also in this column? SodiumĬ. How many valence electrons does lithium have? 1ī Now look at your periodic table. Observe: Drag the nonmetal into the trash ( ) so there is only the one lithium atom visible.Ī.Question: How are elements arranged into chemical families? The vertical columns representĬhemical families, or groups of elements with similar chemical properties. Introduction: The periodic table arranges elements by size and property. You will need a periodic table for this activity.Select Lithium (Li) from the Select a metal list.Aluminum and chlorine: Al +3 Cl -1 AlClĮ. Losing this electron it has just a regular shell of 8 electrons, also becoming a stableĬlick Check in the lower right corner of the Gizmo to check.Ĭ. Sodium on the other hand has 1 valence electron, by Chlorine only has 7 valence electrons, so gaining 1 more What are the charges of each atom now? Sodium: +1 Chlorine:. You can calculate theĬharge of an atom by subtracting the number of electrons from the number of protons. Form a bond: Each electron has a charge of 1–, andeach proton has a charge of 1+.Sodium: 1 valence electron Chlorine: 7 valence electrons How many valence electrons does each atom have? Observe: Most atoms are stable with a configuration of eight valence electrons.Based on this, how many protons are in each atom? Each atom is neutrally charged, which means that each atom has the same number of protons andĮlectrons. Sodium: 11 electrons Chlorine: 17 electronsī. Many electrons are there total in each atom? Assuming that the inner rings are full of electrons, how (Electrons in the inner ringsĪre not shown you can assume these rings are full.)Ī. The first ring holds two electrons, and the second holds eight. Count: Electrons move around the nucleus of atoms in specific shells, shown by the rings around the atoms.Question: What happens when atoms gain or lose electrons? With the same charge (+ and + or – and –) repel. Particles with opposite charges (+ and –) attract, while particles Electrons are negativelyĬharged, while protons are positively charged. Introduction: Some of the particles that make up atoms have an electrical charge. Check that sodium and chlorine are still selected.Sodium becomes a cation, and chlorine becomes an anion. Try moving an electron from the metal to the nonmetal. Based on this experiment, which atom is a metal?ī. Try pulling an electron away from each atom. How tightly the valence electrons are held.Ī. Valence electrons very tightly, while nonmetals hold their electrons tightly. Elements can be classified as metals and nonmetals. How many valence electrons does each atom have? Sodium: 1 Chlorine: 7 The outermost electronsĪre called valence electrons. Each atom consists of a central nucleus and several shells that contain electrons.(Note: These atom models are simplified and not meant to be realistic.) Click Play ( ) to see electrons orbiting the nucleus of eachĪtom. To begin, check that Sodium (Na) and Chlorine (Cl) are selected from the The Ionic Bonds Gizmo allows you to explore how ionic bonds form. Just like students sharing markers, atoms sometimes share or swap electrons. Maggie has to give away 2 markers to Fred and Florence so each has 8. How can they share markers so each has 8? Maggie has 10 markers, but Fred and Florence each Maggie is sitting at a table with Fred and Florence.Nate can give Clara 1 marker, so they each have a full set. ![]() What can Nate and Clara do so that each of them has a full set? Nate and Clara are drawing pictures with markers.Prior Knowledge Questions (Do these BEFORE using the Gizmo.) Vocabulary: chemical family, electron affinity, ion, ionic bond, metal, nonmetal, octet rule, shell, valence Name: Ashley Maddison Date: 11/28/ Student Exploration: Ionic Bondsĭirections: Follow the instructions to go through the simulation.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |