Crossword

4. Property/Those characteristics that can be observed without changing the identity of the substance such as size, shape, luster, conductivity, malleability, and magnetic attraction.
7. is made up of the elements hydrogen and oxygen.
9. of the Systems/Only a small number of different elements comprise the majority of matter found in Earth's systems.
10. Formula/A shorthand notation that uses chemical symbols and numbers as subscripts to represent the type of atoms and number of atoms that are present in the smallest unit of the substance.
11. Table of Elements/An arrangement of the elements according to their atomic numbers and periodic trends of physical and chemical properties.
14. that has volume and mass.
15. pure substance that cannot be separated into simpler substances by physical or chemical means.

1. columns on a periodic table that arrange the elements by select characteristics.
2. Earth/Oxygen and silicon are the main elements of matter that make up the rock and minerals of Earth's crust.
3. Matter/Cells from living matter are made of carbon bonded to other elements, such as hydrogen, oxygen, phosphorus, nitrogen, calcium, or sulfur.
4. rows in a periodic table that classify the elements by select characteristics.
5. that is composed of two or more elements that are chemically combined.
6. Substance/Matter that is made up of the same particles throughout.
8. mixture of mainly nitrogen and oxygen, with small amounts of other gases that surround Earth.
12. smallest unit of an element that has all of the properties of that element.
13. Number/The number of protons (positive charges) in an atomic nucleus.