If oxygen and steel wool are combined is it a physical change or chemical change?

What is a good example of a contact force?

Where would u axpect to find lava

Match the term in the correct description 1.) materials that stop the flow of electricity is ___ 2.) Materials that do conduct electricity just not as well as conductors ___ 3.

1. An advertisement says a car can go from 0 to 26.8 m/s in 6.2 sec. What is the average acceleration of the car?

Breaks in the Earths crust called faults from where plates meet true or false

Which phases of matter do molecules have the lowest amount of energy?

How many Oxygen (O) atoms are in the following? H2O + CO2 4 3 2

How does surface roughness affect friction

Why does it hurt your hands when you carry heavy shopping in carrier bags?

Why did scientists choose carbon as a base for the atomic mass unit? Which isotope of carbon did they use?