Across
- 4. / Sub-particles that have a positive charge.
- 6. Table / Elements are organized in it.
- 8. Change / When one substance changes to another substance.
- 9. / The state of matter that has a definite volume, but takes up the space of the container in which it is placed.
- 14. / Another Greek philosopher who disagreed with Democritus' ideas. He believed that you could never end with a particle that can't be cut.
- 16. / A scientist who discovered that particles have sizes and charges.
- 18. / The most common element in the universe. It is in the 1st place on the periodic table.
- 19. / Sub-particles that do not have an electrical charge.
- 20. Experiment / An experiment performed by Rutherford, who demonstrated that the nucleus has positive charges.
- 21. / A scientist who proposed the movement and position of the electrons around the nucleus.
- 23. / A Greek philosopher who thought that you would eventually end up with a particle that could not be cut.
- 26. of Matter / The physical forms in which a substance can exist. Example: Solid, liquid, and gas.
- 27. / A group of elements,in the periodic table, which are a great conductors of heat and electricity. They are shiny, and reflect light well.
- 29. / The state of matter that has no definite shape or volume.
- 30. / Any substance that has a mass, and occupies a space.
- 32. / An atom that has gained or lost one or more of its electrons.
- 33. in Pudding / An experiment made by Thomson, he thought that electrons were mixed throughout an atom. (HINT: It involves pudding)
Down
- 1. / Small particles that made up protons and electrons.
- 2. / The smallest piece of matter, that still has the properties of an element.
- 3. / A scientist who stated that all substances are made of atoms. Atoms are small particles that can be divided, created, or destroyed.
- 4. Change / Change in a substance's size, shape, or state of matter.
- 5. / An element that has only 2 protons, 2 electrons, and 2 neutrons. It is one of the noble gases. (HINT: Is less dense than the air).
- 7. / Sub-particles that have negative charge.
- 10. A physical property of a metals, which is the ability to be stretched into wires.
- 11. / A pure substance which has a fixed composition, can be divided into metals, metalloids, and non-metals.
- 12. / The complete opposite of metals, a group of elements, in the periodic table, which are poor conductors of heat and electricity, and have a dull appearance.
- 13. / A group of elements, in the periodic table, which have both properties of metals and non-metals. Example: Silicon.
- 15. Cloud / The group of electrons surrounding the nucleus of an atom.
- 17. / Atoms of the same element with different number of neutrons.
- 22. number / The sum of protons and neutrons located in the nucleus of an atom.
- 24. / The only room temperature liquid metal. It is used in thermometers and batteries.
- 25. / Experimented with a cathode-ray tube, and discovered negatively charged particles.
- 28. / The state of matter that has a definite shape and volume.
- 31. number / Number of protons in an atom.