OCR Chemistry Worksheet - Atoms and Elements PDF
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This worksheet provides practice exercises for learning about atoms, elements, and atomic structure, covering topics like isotopes, moles, and atomic conversions. It's a good resource for secondary school chemistry students.
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Module 2: Atoms and Elements Worksheet Part 2 Learning Objectives Module 2: 1. Define subatomic particles: protons, neutrons, and electrons 2. Identify the chemical symbol that corresponds to a particular element and vice versa. 3. Identify g...
Module 2: Atoms and Elements Worksheet Part 2 Learning Objectives Module 2: 1. Define subatomic particles: protons, neutrons, and electrons 2. Identify the chemical symbol that corresponds to a particular element and vice versa. 3. Identify groups and periods on the periodic table, and identify regions corresponding to metals, nonmetals, and metalloids. 4. Characterize the chemical and physical properties of and differentiate between metals, nonmetals, and metalloids. 5. Given the atomic number and mass number of a particular isotope, state the number of protons, neutrons, and electrons; provide the mass number and/or atomic number given the number of protons, neutrons, and electrons. 6. Express the subatomic composition of an isotope using isotope notation. 7. Perform calculations involving atomic mass, percent natural abundance and isotope mass. 8. Convert from mass of element to the number of atoms using dimensional analysis Exercise 2.1: Find the number of atoms of phosphorus (P) in 3.44 moles of phosphorus Learning Objective(s): Given: Asked for: Strategy: Solve: Exercise 2.2: How many grams of cobalt are in 0.38 moles of cobalt (Co)? Learning Objective(s): Given: Asked for: Strategy: Solve: Exercise 2.3: How many moles of nickel (Ni) is 3.88 x 1025 atoms of nickel? Learning Objective(s): Given: Asked for: Strategy: Solve: Exercise 2.4: What mass (in mg) does 2.63 moles of nickel have? Learning Objective(s): Given: Asked for: Strategy: Solve: Exercise 2.5: How many moles of krypton (Kr) are contained 398 mg of Kr? Learning Objective(s): Given: Asked for: Strategy: Solve: Exercise 2.6: Calculate the mass (in kg) of 2.33x1020 atoms of oxygen (not diatomic oxygen). Learning Objective(s): Given: Asked for: Strategy: Solve: Exercise 2.7: Find the mass (in Mg) of 4.55 x 1028 atoms of vanadium (V). Learning Objective(s): Given: Asked for: Strategy: Solve:
