![]() When the overall charge of an atom is neutral, then there are an equal number of protons and electrons. Electrons have a negative charge or a –1 charge to them. Protons have a positive charge or +1 charge on them. Each of our three subatomic particles in the atom has a type of charge. How is this sharing possible? Well, it depends on the electrical charge of the atom. The large oxygen atom in a water molecule shares electrons with the hydrogen atoms. The outermost electrons in an atom are sometimes shared with another atom. The electrons in each of these atoms that make up the water molecule are moving all around in their electron shells, or clouds. ![]() For example, if you look at a molecule of water, it is made up of two hydrogen atoms and one oxygen atom. Just as we look at the shapes of different LEGO™ pieces, rather than the plastic that makes them, today we are just going to look at protons, neutrons and electrons as the "LEGOs" of matter.ĭid you know that atoms have energy? Well, these tiny subatomic particles are constantly moving or vibrating and we cannot even tell. The things we see in our world (water, wood, metal, skin, teeth) are better understood and organized by using the number of protons, neutrons and electrons their atoms (and molecules) contain. It is difficult (if not impossible) to determine the physical properties of something based on the number or quarks and leptons it contains. Physicists have recently divided atoms into even smaller subatomic particles such as fermions (quarks, leptons, neutrinos, electrons) and bosons (gluons, photons, gravitrons). The three main ones are protons and neutrons, which are found in the nucleus or core of the atom, and electrons, which are found floating around in shells outside of the nucleus. Several subatomic particles make up an atom. Molecules can be broken down into atoms, but can the atom actually be broken down into smaller parts? Yes, it can. We will also learn how atoms come together to form molecules! We will learn about the parts of an atom, its structure, and learn how to determine the charge of an atom. In this activity, we are going to learn about the atom. These tiny building blocks of matter are called atoms and they make up everything we see around us, even ourselves. Have you ever wondered what everything around you is made of? Are things made up of tiny particles that we cannot see? Yes, they are. Students should have some knowledge of atoms as the basic building blocks of matter. Time, space, and energy phenomena can be observed at various scales using models to study systems that are too large or too small.Ītom Worksheet Answers (pdf) Visit [ to print or download. Atoms form molecules that range in size from two to thousands of atoms.Īlignment agreement: Thanks for your feedback! Solids may be formed from molecules, or they may be extended structures with repeating subunits Substances are made from different types of atoms, which combine with one another in various ways. This activity focuses on the following Three Dimensional Learning aspects of NGSS:ĭevelop a model to predict and/or describe phenomena.Īlignment agreement: Thanks for your feedback! I joined TpT with seventeen years of publishing experience through several international science supply corporations.Develop models to describe the atomic composition of simple molecules and extended structures.Ĭlick to view other curriculum aligned to this Performance Expectation I have over twenty-five years of teaching and curriculum writing experience. This document will become editable upon conversion to Microsoft Word using the Adobe Acrobat Reader DC app. High school physical science teachers could also use this lesson as a remedial reinforcement activity or as an accommodation to differentiate their curriculum to meet the needs of students who struggle to learn. I assign this activity in my eighth-grade physical science class. Finally, students examine the Lewis symbol and read a short narrative on valence electrons before answering a few questions about covalent and ionic bond tendencies for phosphorus, the mystery atom. Students use the atomic number to identify the mystery atom. Students then are asked to count the number of electrons in the first, second, and third energy levels. ![]() Students then count and add the number of neutrons to the proton total to ascertain the atomic mass. From there, students count the protons to determine the atomic number. The mystery atom has three different energy levels of electrons and students are directed to color each layer differently. After shading in the protons, neutrons, and electrons their respective colors, students superimpose a plus sign in the yellow-colored protons to denote their positive charge. In this two-page activity, students color the subatomic particles in two atoms – nitrogen on page one and a mystery atom on page two.
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