Dealing with Energy
This is the ability to do work or cause change.
What is energy?
This is a single kind of matter with a specific composition. (Examples: salt, water.)
What is a substance?
This is the smallest unit of matter.
What is an atom?
This is the international system of measurement used in science and by almost every country in the world.
What is the metric system?
Energy cannot be created and cannot be destroyed in a physical change or chemcal change.
What is the Law of Conservation of Energy?
This is made up of two or more substances that are not chemically bonded (connected.)
Examples: tossed salad, trail mix
What is a mixture?
This is the center of an atom that contains protps and neutrons and has a positive charge.
What is the nucleus?
What is the meter?
This is the average amount of motion of the particles of a substance. (The faster the molecules are moving, the hotter the temperature._
What is temperature?
This is a mixture that is easily separated so its different parts can be seen.
Examples: mixed nuts, bin of legos
What is a heterogeneous mixture?
These are the different types of atoms. They have the same number of protons.
What are elements?
This is the metric unit for time.
What is the second?
Temperature does not change with the amount of the substance. Thermal energy increases when the amount of the substace increases.
What is the important difference between temperature and thermal energy?
This is a mixture that looks uniform (the same) throughout. It's hard to see its parts.
Examples: cake mix, lemonade.
What is a homogeneous mixture?
This is the negative particle found in a cloud circling the atom's nucleus.
What are electrons?
This is the metric prefix meaaning 1,000. Fo example, there are 1,000 grams in one kilogram.
What is kilo?
This is a change in which energy is absorbed.
What is endothermic change?
These are properties that are only observed when matter is turned into another substance.
Examples: rusting, flammability.
What are chemical properties?
This is the positive particle found in the atom's nucleus.
What are protons?
This is the metric unit for volume.
What is liter?