Physics

4. It is the smallest unit of ordinary matter that forms a chemical element.
6. It is valued as 1.38×10^-23 JK-1.
9. This might be measured in °C.
12. It is a branch of physics that deals with heat, work, and temperature, and their relation to energy, radiation, and physical properties of matter.
13. It is a sample of matter that retains its shape and density when not confined.
14. Properties of atoms.
15. This is a measure of the space occupied by the gas.
17. A statement that the volume occupied by a fixed amount of gas is directly proportional to its absolute temperature, if the pressure remains constant.
18. The ______________ of gases is a simple, historically significant model of the thermodynamic behavior of gases, with which many principal concepts of thermodynamics were established.
19. A relationship or correlation that is supported by experiment and observation but not necessarily supported by theory.
20. It is a state of matter that has no fixed shape and no fixed volume.

1. Random motion, also known as Brownian motion, is the chaotic, haphazard movement of atoms and molecules.
2. It is the base unit of temperature in the International System of Units, having the unit symbol K.
3. It is a small localized object to which can be ascribed several physical or chemical properties such as volume, density or mass.
5. This is measured in g or kg.
7. It is a nearly incompressible fluid that conforms to the shape of its container but retains a constant volume independent of pressure.
8. A motion, also called Brownian movement, any of various physical phenomena in which some quantity is constantly undergoing small, random fluctuations.
10. It is an electrically neutral group of two or more atoms held together by chemical bonds.
11. This law relates the pressure p and volume V of a gas, it was discovered in 1662 by Robert Boyle.
16. This is the normal force exerted per unit area.