Yicen's crossword

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Across
  1. 3. The power or skill that is needed to do something.
  2. 7. A person who is in the same class as you at school.
  3. 8. A secret word or phrase that you must use to log in to a system
  4. 10. A substance that is obtained by or used in a chemical process.timetable: A chart showing the days and hours when specific events or classes take place.
Down
  1. 1. The study of numbers, shapes, and space
  2. 2. An outdoor area where children can play.
  3. 4. Required by law or a rule; mandatory.
  4. 5. A chart showing the days and hours when specific events or classes take place.
  5. 6. To watch or notice something carefully.
  6. 9. The flat surface on a computer or television which shows images