Chemistry

2. a mixture with only one visible phase.
6. all particles are in constant mo....
7. elements on the per..... table represents individual atoms.
9. a mixture that has more than one visible phase.
10. is a type of matter with lots of particle movement
12. we call the electrons in the outer shell val..... electrons.
13. contains more than one type of particle
14. These elements may have metal and nonmetals properties.
17. the number of groups of atoms in the periodic table.
19. particles at...ct each other
23. the charge of an atom before it turns into an ion.
24. to make the charge of an atom neutral there must be the same amount of electrons and pr.....
25. most elements on the periodic table are m.....
26. an ele.... is a pure substance that cannot be broken down into simpler substances either physically or chemically.
27. the core of an atom made of positively charged particles.

1. an exo....... reaction is a chemical reaction that releases energy in the form of heat, causing the temperature to
3. is a type of matter with little particle movement
4. the smallest piece of matter that is indivisible
5. an endo....... reaction is a chemical reaction that absorbs energy, causing the temperature to decrease.
7. All matter is made up of tiny pa....... separated by empty space
8. quan........ property is a property that can be measured using a numeric value
11. qual....... property is a property that does not have a numeric value
15. orbits the nucleus of an atom.
16. the at.... number is the number of protons of an atom.
18. the first element on the periodic table
20. contains multiple elements bonded together but is still a pure substance.
21. matter that contains only one type of particle is a p... substance
22. is a type of matter with very high amount of particle movement
25. is anything that takes up space and has mass.