Question

Dont answer if you dont know it

Why do metals conduct electricity?
Question 1 options:


metals hang on tightly to their electrons


electrons flow freely in metallic bonds


electrons are good at insulating from heat


metals are slippery





In an ionic bond, electrons are _________.
Question 2 options:


given to noble gases


gained or lost


moved to inner shells/orbitals


shared




What happens when an acid is mixed with a base?
Question 3 options:


they will form a stronger acid


they will form a gas


they will neutralize each other


they will form a stronger base





How many valence electrons do most atoms need to have in their outer shell to be most stable?
Question 4 options:


8


1


4


6






Metals tend to ________ electrons and become __________.
Question 5 options:


lose, anions


lose, cations


gain, anions


gain, cations





What does a chemical change always result in?
Question 6 options:


precipitate


new reactant


increased activation energy


new substance




Question 7
Fill in the blank: What is the correct name for the ionic compound Ca2P5?




Which is NOT evidence of a chemical reaction?
Question 8 options:


bubbles


precipitate formed


melting


color change

Answer 1

Question 1: electrons flow freely in metallic bonds.

Step-by-step explanation:

In metallic bonds, electrons are free to move because they are not held by forces. Thus they can conduct electricity.

Question 3: They will neutralize each other.

When an acid reacts with a base, they will neutralize each other. This is because an acid is more reactive than a base so when they react , the acid is neutralized that is, the base reduces the acidity of the acid.