Across
- 2. a positive subatomic particle found in the nucleus of an atom
- 6. matter made up of two or more substances that are not joined chemically
- 8. a group of chemical symbols and numbers that shows the number of atoms of each element in a molecule
- 10. pH of less than 7
- 11. new substances formed in a chemical reaction and that they are located on the right side of the arrow in a chemical equation
- 14. the ease and speed with which an element combines, or reacts, with other elements and compounds
- 15. a characteristic of a substance that cannot be observed without changing the identity of the substance
- 17. a change in substance that does not change the chemical makeup of the substance
- 20. a pure substance that cannot be broken down into other substances by chemical or physical means
- 21. a system in which no matter is allowed to enter or leave
- 25. an element that conducts heat and electricity well, is shiny, and can be hammered into sheets or drawn into wires
- 26. substances broken apart or combined in a chemical reaction and they are located on the left side of the arrow in a chemical equation
- 28. a description of a chemical reaction using chemical formulas, subscripts and coefficients
- 30. a mixture in which substances are evenly distributed
- 32. the ability of an object to transfer heat or electricity to another object
- 33. the basic building block of most of the matter around us
- 34. elements in the same vertical column of the periodic table
- 35. an element that does not conduct heat or electricity well and is dull and brittle or gaseous
- 36. a number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in the reaction
Down
- 1. the number of protons in the nucleus of an atom
- 2. a chart of elements showing the repeating pattern of their properties
- 3. a term used to describe a material that can be pulled out into a long wire
- 4. a pure substance that forms when two or more elements join chemically in a fixed proportion
- 5. a term used to describe a material that can be pounded into shapes
- 7. scale used to classify solutions
- 9. a solid substance formed when two solutions are chemically combined
- 10. the average mass of all the isotopes of an element
- 12. pH of more than 7
- 13. a system in which matter can enter from or escape to the surroundings
- 16. result in the formation of one or more new substances with new chemical and physical properties
- 18. a mixture in which substances are not distributed evenly
- 19. a characteristic of a substance that can be observed directly or measured with a tool without changing the identity of the substance
- 22. a subatomic particle with no charge and is found in the nucleus of the atom
- 23. a specific number of atoms of the element found in each molecule of a substance
- 24. elements that has some properties of both metals and nonmetals
- 27. the number of electrons found in the outer shell
- 29. a group of two or more atoms held together by chemical bonds
- 31. a negatively charged subatomic particle found outside the nucleus of an atom