True/False: Read each statement carefully and indicate whether the statement is

Question

True/False: Read each statement carefully and indicate whether the statement is true or false. Fill in the appropriate letter on your scan tron. CH 4: In a neutral atom, the number of protons is equal to the number of neutrons. True. False. CH 4: Isotopes are forms of an clement that have the same number of protons but a different number of electrons. True. False. CH 6: Elements in the same family tend to have the same number of valence electrons. True. False. CH 6: An atom that gains an electron will form a positive ion. True. False. CH 8: Write a balanced chemical equation for the reaction between chlorine gas and sodium bromide For every 1 molecule of chlorine, you will need 1 molecule of sodium bromide. True. False. CH 8: Vegetable oil will not mix with water because they are both polar molecules. True. False. CH 13: 14 atmospheres is equal to 5,000 mm of Hg. True. False.

Explanation / Answer

1. b.False

in neutral atom electrons and protons are equal but neutrons are different

2.a. true

                      1H1     1H2        1H3

electrons   1        1           1

protons     1         1           1

neutrons   0         1          2

3.a true

IA group ns1

4. b.False

Cl+e- -----> Cl-

5. b.False

Cl2   + 2NaBr ------->2 NaCl + Br2

6.b.False

oil is non polar ,water is polar

7. b. false

1atm = 760mmHg

14 atm = 14*760mm

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