Term | Definition |
Solid | -A definite shape, a definitive volume, particles close together, strong attractive forces between particles. |
Liquid | -no definite shape, a definite volume, particles close together, weaker attractive forces between particles than in solids, particles free to move past neighboring particles |
Gas | -no definite shape, no definite volume, particles very far apart, very weak attractive particles that are very far apart, particles move freeky |
Law of conservation of Mass | the total mass before a chemical reaction is the same as the total mass after a chemical reaction |
Mass | the amount of matter in an object |
Weight | the gravitational pull on the mass of an object |
Volume | the amount of solute that can be dissolved in a given amount of solvent at a given temperature and pressure |
Density | the mass per unit volume of a substance |
Melting Point | when a material changes from a solid to a liquid |
Boling point | when a material changes from a liquid to a gas |
Formula for density | Density = mass/ volume |
Physical change | a change in the size, shape, form, or state of matter that does not change the matter's identity |
Chemical change | a change in matter in which the substance that makes up the matter change into other substances with different chemical and physical properties |
Law of Conservation of Energy | energy can be transformed from one form into another or transferred from one region to another, but energy cannot be created or destroyed. |
Kinetic Energy | Energy due to motion |
Potential Energy | stored energy due to the interaction between objects or particles |
Gravitational Potential Energy | stored energy between the earth and an object |
Elastic Potential Energy | stored energy in an object that are compressed or stretched |
Chemical Potential Energy | stored energy in the chemical bonds between atoms |
Mechanical Energy | the sum of potential energy and kinetic energy in a system |
Sound Energy | the energy that sound carries |
Thermal Energy | the sum of kinetic energy and potential energy of particles that make up an object |
Electric Energy | the energy an electric current carries |
Radiant Energy | the energy that electromagnetic waves carry |
Nuclear Energy | energy that is stored and released in the nucleus of an atom |
Hypothesis | an informed guess that can be tested |
prediction | a statement of what will happen next in a sequence |
qualitative observation | an observation made using you senses |
quantitative observation | an observation made through measurements |
dependent variable | information gathered or measured during an experiment |
independent variable | the variable that changes in an experiment |
data | information gathered during an experiment |