Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
science 8 chapter 4
study guide
| Question | Answer |
|---|---|
| What are the names of the four theories of the atom? | Daltons, tomson, rutherford, and bohr's |
| What are the three particles in an atom? | proton, neutron, electron |
| atomic number | the number of protons in the nucleus |
| isotope | an atom with the same number of protons and a different number of neutrons from other atoms of the same element |
| energy level | a region of an atom in which electrons of the same energy are likely to be found |
| mass number | the sum of protons and neutrons in the nucleus of an atom |
| who dicovered the periodic table? | Dmitri Mendeleev's |
| What type of things are labeled on the table? | metals, nonmetals, metalloids, solids, liquids, gases, and not found in nature |
| period | the horizontal row organized by reactiveness |
| groups | also known as families organized for similar characteristics |
| what makes up a square on the periodic table? | atomic number, chemical symbol, element name, atomic mass |
| nuclear fusion | occurs in stars aand is a process in whitch 2 atomic nuclei combine forming a large nucleus and releasing huge amounts of energy |
| Physical characteristics of metals | shininess, malleability, ductility, and conductivity |
| characteristics of nonmetals | poor conductors of energy and heat, are reactive with other elemnts, and they are dull and brittle |
| characteristics of metalloids | conduct electricity, are solids at room temperature, are brittle hard and somewhat reactive |
| What element makes up only one group? | hydrogen, because the chemical properties differ very much from other elements |
| all the weight of an atom comes from where? | the center |
| what adds the extra weight to get the decimal in the atomic weight? | isotopes |
| All symbols have? | A capital letter and some have a lower case |
| How do you find the atomic mass? | the average mass of all the isotopes of an element, you add together the elements and then divide to find the weight |
| you have a catital letter and sometimes a lower case why? | so you dont get confused with compounds |
Created by:
chsJenna
Popular Physical Science sets