Name: Answer Key Class: Gr.11 Isotope Practice 1. Here are three isotopes of an element: 12C 14 13C C a. The element is: Carbon b. The number 6 refers to the Atomic Number c. The numbers 12, 13, and 14 refer to the Mass Number d. How many protons and neutrons are in the first isotope? 6 protons & 6 neutrons e.

This worksheet starts with simplified notes on the atom, subatomic particles, isotopes, isotope notation, and atomic calculations. Then, students practice with atomic calculations, identifying the atom and writing isotope notation.

Isotope Practice 1. Here are three isotopes of an element: 12C 13C 14C a. The element is: _____ b. The number 6 refers to the _____ c. The numbers 12, 13, and 14 refer to the _____ d. How many protons and neutrons are in the first isotope? _____ e.

For each of the following isotopes, write the # of protons, neutrons, and electrons. Fill in the isotope names and any missing information, including isotope numbers from the chart. Use your periodic table and the information provided.

Here are three isotopes of an element: 12C 6 13C 6. How many protons and neutrons are in the first isotope? _________________ How many protons and neutrons are in the second isotope? _________________ How many protons and neutrons are in the third isotope? _________________ 2.

1. Argon has three naturally occurring isotopes: argon-36, argon-38, and argon-40. Based on argon’s reported atomic mass, which isotope exist as the most abundant in nature? Explain.! !! 2. Copper exists as a mixture of two isotopes. Copper-63 is …

Name:_____ Period:_____ Isotope Practice 1. Here are three isotopes of an element: 12C 6 13C 6 14C 6 a. The element is: _____ b. The number 6 refers to the _____ c. The numbers 12, 13, and 14 refer to the _____ d. How many protons and neutrons are in the first isotope?

Use the following examples to help answer the questions below: Practise Questions: Complete the following problems. Show your work, and be sure to use proper significant figures and standard form in your answers. 1. How many atoms are in 5 moles sulfur? 30.11 x 1023 atoms 2. How many atoms are in 8 moles carbon? 48.176 x 1023 atoms 3.

Isotope Practice 1. 12Here are three isotopes of an element: 13 C C 14C a. The element is: Carbon b. The number 6 refers to the: Atomic Number c. The numbers 12, 13, and 14 refer to the different mass numbers d. How many protons and neutrons are in the first isotope? P: 6 N: 6 e. How many protons and neutrons are in the second isotope? P: 6 N: 7

Isotope Practice 1. Here are three isotopes of an element: 12C 13C 14C a. The element is: _____ b. The number 6 refers to the _____ c. The numbers 12, 13, and 14 refer to the _____ d. How many protons and neutrons are in the first isotope? _____ e.