Across
- 3. the neutral particle in the nucleus of an atom
- 4. the smallest particle of an element that has the properties of that element
- 5. he developed the model of the atom in which electrons orbit the nucleus in energy levels
- 9. a type of laboratory flask which features a flat bottom, a conical body, and a cylindrical neck
- 10. a laboratory tool commonly used in chemistry, biology and medicine to transport a measured volume of liquid
- 12. it has a round body, a long neck, and often a flat bottom. It is designed for uniform heating, boiling, distillation and ease of swirling
- 14. a circular concave piece of glass used in chemistry as a surface to evaporate a liquid, to hold solids while being weighed, for heating a small amount of substance and as a cover for a beaker
- 15. the positive particle in the nucleus of an atom
- 16. a tube or pipe that is wide at the top and narrow at the bottom, used for guiding liquid or powder into a small opening
- 17. a graduated glass tube with a tap at one end
Down
- 1. a common piece of laboratory equipment used to measure the volume of a liquid
- 2. used by Rutherford in his experiment; made of two protons and two neutrons
- 6. the tiny positive core of an atom; contains protons and neutrons
- 7. a device used to transfer small quantities of liquids
- 8. a glass object used for holding liquids and chemicals
- 11. protective eyewear that usually enclose or protect the area surrounding the eye
- 13. the negative particle that circles the nucleus