Answer:
Barium and Chlorine
Explanation:
Ionic bonds are formed between metals and non metals where the metals lose electrons and become positively charged and the non metals gain electrons and become negatively charge. The opposite charges cause them to be attracted to each other and Bond. The only metal in those options above is Barium. Therefore an ionic bond will be formed between Barium and Chlorine.
Answer:
A) Charging by contact
Explanation:
Transfer of heat by direct contact, Heat energy is conducted from the hotter medium to the cooler medium
Answer:
D
Explanation:
Molecules at higher temperatures have more energy and can vibrate faster and allow sound waves to travel more quickly.
This is a double replacement reaction. To balance the equation, you can not change the subscript because it will fully change the equation. Instead you change the coefficient infront of the element.
4 NaI + 1 Pb(SO4)2 —> 1 PbI4 +2 Na2SO4
