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Knowledge Map
Waves and Matter and Chemistry (2 sections)
Question | Answer |
---|---|
A disturbance that transfers energy from place to place | Wave |
This is needed to transmit ocean waves and sound waves, but not necessary to transmit light | Medium |
A wave that can carry energy through matter or empty space. | Electromagnetic wave |
The entire range of electromagnetic waves, which includes RADIO waves, MICROWAVES, INFRARED, VISIBLE LIGHT, ULTRAVIOLET, X-RAYS, GAMMA RAYS AND COSMIC RAYS | Electromagnetic spectrum |
A mechanical wave caused by earthquakes that travels through the earth | Seismic wave |
This type of force will cause an object to change speed and/or direction | Unbalanced force |
The number of protons in its nucleus determines this | Atomic Number |
The number of protons PLUS the number of neutrons in the nucleus determine this | Atomic Mass |
This type of atom has an EQUAL number of protons and electrons | A neutral atom |
Protons have this type of charge | Positive (+) |
Neutrons have this type of charge | None .. Neutral |
These two parts of an atom are found in the NUCLEUS | Protons (+) and Neutrons (neutral) |
Electrons have this type of charge | Negative (-) |
Where are electrons found? | Outside the nucleus in the electron cloud |
The process when one or more substances change chemically to produce one or more different sustances | Chemical reaction (or chemical change) |
The shorthand description that uses chemical formulas to describe a chemical reaction | Chemical equation |
The starting substance(s) in a chemical reaction | Reactants |
The new substance(s) that are formed in a chemical reaction | Products |
A change that affects the size, shape, phase or color of a substance, but does not affect its composition. The SAME substance(s) remain and no new substance is formed | Physical Change |
Substances that transfer heat easily | Conductors |
Substances that do NOT transfer heat easily | Insulators |
The basic building blocks of matter, and are made of only one type of atom. | Elements |
How many known elements are there? | Approximately 120 |
Two or more elements combined | Compound |
This is an arrangement of elements according to their atomic numbers | Periodic Table |
Elements in the same ???? or column have similar properties | Group |
Elements that have a shiny luster, are malleable and ductile, and conduct heat and electricity | Metals |
Elements that have a dull luster, are brittle and are poor conductors of heat and electricity. | Nonmetals |
Elements that have properties of metals AND nonmetals | Metalloids |