science ch9 lesson 2 Word Scramble
|
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
Question | Answer |
atom | the smallest particle of an element that still has the same chemical properties of the element |
nucleus | at the center of an atom and contains most of its mass |
neutrons | have no electrical charge |
protons | have a positive electrical charge |
atomic number | the number of protons in an atom element |
electrons | have a very small mass and a negative electrical charge |
periodic table | a chart that shows the elements in order of increasing atomic number |
motecule | the smallest particle of a compound that still has all the qualities of that compound |
isotopes | atoms of the same element that have different atomic massses |
Na+CI = ? | NaCI |
chemical formula | a simple way to indicate the composition of elements in a compound |
metals | conduct heat and electricity. it melts at high temperatures and can be reshaped |
nonmetals | have a dull surface and melt at lower temperatures, and tend to break when bent |
metalloids | have some properties of metals and some of nonmetals |
atomic mass | the number of protons added to the number of neutron |
which of the following has the LEAST atomic mass? A) oxygen)O) B)carbon(C) C)nitrogen(N) D)helium(He) | B: Carbon(C) |
the lead in a pencil is composed of the element_________ | carbon |
water is composed of the elements _________ and _________ | hydrogen; oxygen |
compound | a substance formed from the chemical combination of 2 or more elements that then act as a unique substance |
water is a ______ | compound |
scientists have discovered more than ____ elements | 100 |
a diamond is made of what? | carbon |
isotopes | atoms of the same element may have different numbers of neutrons |
iron | an atom that has an overoll positive or negative charge |
chemical formula | a simple way to indicate the composition of elements in a compound |
Created by:
moncheechee19
Popular Science sets