CHEMISTRY

4. / is the name of the force exerted on an object due to the acceleration of gravity.
5. / amount of matter in a body
6. / is anything that has mass and occupies space.
7. / a column in the periodic table
9. / process of comparing something with a standard.
10. / refers to the smallest estimated value taken directly from the device.
11. / refers to the smallest exact value taken directly from the device.
13. / a row in the periodic table
14. / an element located in group 2A of periodic table.
15. / an element contained in one of the 10 columns in the periodic table
16. / modern periodic table
17. / is a quantity that compares the density of a substance with the density of water at 4'C
18. / simplest known substance.
19. / cannot be broken down into simpler components by ordinary mechanical means; fixed composition
21. / have properties intermediate between metals and nonmetals.
23. / uncharged particles
24. / contains 2 or more components whose composition may be varied.
25. / atoms of the same elements having a different number of neutrons
27. / are shiny substance that conduct heat and electricity.

1. / negatively charged particles
2. / deals with the study of matter--its composition, properties, and transformations.
3. / an element located in group 1A.
5. / number of protons + number of neutrons
8. / a group consisting of 3 elements with the same properties.
12. / a compound that contains both a hydrogen atom and a lone pair of electrons so that it can be either an acid or a base.
15. / is a measure of how hot or cold an object is.
20. / are poor conductors of heat and electricity.
22. / is a physical property that relates the mass of a substance to its volume.
23. / the 1st and 8th element resemble one another in physical & chemical properties.
26. / positively charged particles