List 2 things that about velocity and speed that are different and two that are the same.

Hey there!
Speed and velocity both:
1) Measure how fast something is moving
2) Both measured in miles per hour, meters/second, etc (rates)
However, there's a prime difference:
Different because:
1) Velocity is speed, but in a certain direction
2) Velocity is a vector
3) Velocity can be positive or negative, unlike speed.
I added another just in case you had a preference :)

Hope this helps!

The answer is D

Nitrogen and fluoride are both nonmetals which is why they have prefixes in front of them stating how many of each there are.

Tri stands for 3, meaning that there is 3 fluorides and only one nitrogen since it does not have a prefix