# Worksheet - Element Math: Calculating Number of Protons, Neutrons & Electrons

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A 2-page worksheet that gives students practice interpreting information on the periodic table. Specifically, this worksheet challenges students to use an element's atomic number and mass number to calculate the number of protons, electrons and neutrons in 1 atom of that element.

I use this worksheet to review concepts found in Section 2 of my Atoms and the Periodic Table PPT presentation. This section introduces the basic information found in each element square on the periodic table. Namely, the element's chemical symbol, name, atomic number, and mass number. This worksheet gives student practice performing 2 tasks: (1) locating an element on the periodic table to find its name and chemical symbol; and (2) using the atomic number and mass number of an element to calculate the number of protons, electrons and neutrons. A link to my Atoms and the Periodic Table PPT presentation is found below.

PPT - Atoms and the Periodic Table

Product Contents:

Page 1 features a short reading exercise on the following topics:

- Definition of an element
- How elements differ by number of protons
- Basic information found in an element's square: name, symbol, atomic number, mass number
- What the atomic number represents
- What the mass number represents (in basic form)
- Calculating the number of protons, neutrons, electrons from the atomic and mass number

Pages 1-2 features 18 element squares that students complete by filling in one or more of the following pieces of information: name, chemical symbol, protons, neutrons, and electrons.

Pages 3-4 is a full answer key for all element squares.

This worksheet comes in 2 formats: a static PDF document and fully-editable WORD document.

Download the full PDF preview to see EXACTLY what you are getting!

Relevant NGSS Core Idea(s) Addressed by This Product:

NGSS - MS-PS1.A
Physical Science - Matter and its Interactions - Structure and Properties of Matter

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UNIT BUNDLE - Atoms and the Periodic Table

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Total Pages
4 pages
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