Chemistry questions, PLEASE HELP !

1. a) if an atom loses 2 electrons, what is the charge on the resulting ion?
b) give an example?

2. Francium, which is the same chemical family as sodium, will carry what type of charge?
A. negative
B. neutral
C. both
D. positive

3. Which of the following is not a type of chemical reaction?
A. single replacement
B. combustion
C. extended
D. decomposition

4. A physical change is ______ if energy is given off.
A. exothermic
B. endothermic
C. a chemical change
D. not possible

5. Copper is an example of a(n)
A. homogeneous mixture
B. heterogeneous mixture
C. compound
D. element

6. A ______ is when one solution is dissolved evenly in another substance.
A. homogeneous solution
B. heterogeneous solution
C. mixture
D. compound

7. a) describe ionic and covalent bonding
b) give an example of each

8. In a chemical reaction which cannot occur?
A. new elements are formed
B. heat is released
C. light is produced
D. a temperature change

9.Which of the following has almost no mass?
A. proton
B. neutron
C. electron

10. solutions are heterogeneous mixtures.
A. True
B. False

11. Increasing the pressure of a liquid lowers its boiling point.
A. True
B. False

12. Atoms are mostly empty space.
A. True
B. False
C. there is no way to know

13. a) what elements in the same group have in common?
b) give an example

please help! thank you so much!

1. a) if an atom loses 2 electrons, what is the charge on the resulting ion?
2+
b) give an example?
Mg2+

2. Francium, which is the same chemical family as sodium, will carry what type of charge?
D. positive

3. Which of the following is not a type of chemical reaction?
C. extended

4. A physical change is ______ if energy is given off.
A. exothermic

5. Copper is an example of a(n)