Chemistry Chapter 1 Vocabulary

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Across
  1. 5. A substance that cannot be separated or broken down into simpler substances by chemical means; all atoms of an element have the same atomic number
  2. 10. A substance made up of atoms of two or more different elements joined by chemical bonds
  3. 13. A measure of the amount of matter in an object
  4. 14. A change that occurs when one or more substances change into entirely new substances with different properties
  5. 17. Vertical column on the periodic table; also known as a group
  6. 19. A property that does not depend on the amount of matter present, such as pressure, temperature, or density
  7. 21. An element that is shiny and that conducts heat and electricity well
  8. 22. A change of a substance from one physical state to another
  9. 23. A form of matter that does not have a definite volume or shape
  10. 24. Anything that has mass and takes up space
  11. 25. The state of matter that has a definite volume but not a definite shape
Down
  1. 1. A substance or molecule that participates in a chemical reaction
  2. 2. In chemistry, a horizontal row of elements on the periodic table
  3. 3. The smallest unit of an element that maintains the properties of that element
  4. 4. A characteristic of a substance that does not involve a chemical change, such as density, color, or hardness
  5. 6. The process by which one or more substances change to produce one or more different substances
  6. 7. A property of matter that describes a substances ability to participate in chemical reactions
  7. 8. A change of matter from one form to another without a change in chemical properties
  8. 9. A property that depends on the extent or size of a system
  9. 11. In physical science, a state of matter that starts as a gas and then becomes ionized; it consists of free-moving ions and electrons, it takes on an electric charge, and its properties differ from those of a solid, liquid, or gas
  10. 12. Any substance that has a defined composition
  11. 15. An element that has properties of both metals and nonmetals; sometimes referred to as semiconductor
  12. 16. The scientific study of the composition, structure, and properties of matter and the changes that matter undergoes
  13. 18. The state of matter in which the volume and shape of a substance are fixed
  14. 20. An element that conducts heat and electricity poorly and that does not form positive ions in an electrolytic solution
  15. 23. A vertical column of elements in the periodic table; elements in a group share chemical properties; also known as a family