Physical Science Crossword

The basic unit of a chemical element.
Two forces acting in opposite directions on an object, and equal in size.
A characteristic of a substance that indicates whether it can undergo a specific chemical change.
A change in which one or more substances are converted to different substances
The rate of change in velocity (speed and/or direction) when velocity is decreasing; also called negative acceleration.
The mass per unit volume of a material; describes how tightly packed a substance's molecules are.
Strong temporary magnet made by inserting an iron core into a wire coil and passing an electric current through the coil.
Substance in which all the atoms in a sample are alike.
The number of wave crests that pass a point during one second; expressed in hertz.
High frequency electromagnetic waves that travel at the speed of light, have no mass or charge and are the most penetrating form.
In the periodic table, each of the 18 vertical columns of elements; each group is made up of elements with similar properties
Thermal energy that flows from a warmer material to a cooler material.
The unit of measure for frequency.
A mixture in which different parts can be easily distinguished.
A mixture in which different materials are blended evenly so that the mixture is the same throughout; also called a solution.
The tendency of an object to resist any change in its motion. If motionless, it tends to remain at rest; if moving, it tends to keep moving at the same speed and in the same direction.
A material that does not allow heat or electrons to move through it easily.
The basic unit of energy and work
Energy in the form of motion, as in a moving car or truck.
A law stating that matter is neither created nor destroyed during a chemical change.
A law stating that the total momentum of a group of objects is conserved unless a net force acts on the objects.
A simple machine consisting of a bar that is free to pivot around a fixed point.
The region around a magnet where magnetic forces act.
The two ends of a piece of magnetic material where the magnetic forces are strongest, labeled north pole and south pole.
A measurement of the amount of matter in an object.
The SI unit of force.
The unit for measuring resistance.
A horizontal row in the periodic table.
A table of the elements arranged according to repeated changes in properties.
In sound, the difference among sounds of the same pitch and loudness.
Electromagnetic waves that have long wavelengths and are used in communications.
An electrical circuit where the current has only one path. If the path is interrupted in any point, it stops current flow in the entire circuit.
Total energy of a material's particles, including both kinetic energy and potential energy.
Electromagnetic waves that have a higher frequency than visible light.
A difference in electrical potential, measured in volts with a voltmeter.