atom An isotope is a combination of letters and numbers that shows which element

Question

atom An isotope is a combination of letters and numbers that shows which elements make up a compound. An ion is an atom or molecule that carries a charge. Fracture is the tendency of a mineral to split along specific 6. T F 7. T F planes of weakness. 8. T F A mixture is a combination of two or more substances that are not chemically combined 9. T F Magma that cools deep inside the crust forms extrusive igneous rock. 10. T F Organic sedimentary rock forms when pieces of preexisting rock are cemented together. Ores are mineral deposits from which metals and nonmetals carn be removed profitably. 12. T F One characteristic of a mineral is that it is inorganic. (over) 2744B 71

Explanation / Answer

5.F

6.T

7.F

8.T

9.F

10.F

11.T

12.T

13.F

14.T

15.T

16.A)A compound is made up of two or more elements.

17.B)Protons are found in the nucleus of the atom

18A)Electrons are found in the electron cloud of the atom.

19.B and C.

20.C.isotopes have same number of proton but different number of neutrons.

21.C.three atoms of Oxygen.

22.B)cannot be used to generate heat

23.A

24. B

25.A

26.C

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