Which of the following could be classified as matter? desk, water, idea, cloud, helium, dream

Newton's first law is best described as A) The law of inertia B) The law of reaction C) The law of acceleration D) The inverse square law

Which combination best represent the mass and charge of a neutron? 0 amu; positive 1 amu; neutral 1 amu; positive 0 amu; neutral

Explain why neither liquids or gas have permanent shape

Name the 4 spheres of the earth

Why is helium trapped in the earth's crust? If it's its trapped in the earth's crust how does it get into the air that we breathe?

Which microscope came out first

Which exerts greater pressure on the floor-standing flat-footed or standing on tiptoe? on tiptoe, because the force acts over less area on tiptoe, because the force acts over more area flat-footed, because the force acts over more area flat-footed,

1. Sara tells Michael she is 160 centimeters tall, while Michael says he is 60 inches tall. If there are 2.54 centimeters in an inch, who is taller

How do you tell if a compound is polar or non polar

What two ions are central to the arrhenius definitions of acids and bases?