How is a chemical property different from a chemical change

On the surface of Earth, a spacecraft has a mass of 2.00 x 10⁴ kilograms. What is the mass of the spacecraft at a distance of one Earth radius above Earth's surface? (1) 5.00 * 10³ kg (2) 2.00 * 10⁴ kg (3) 4.90 * 10⁴ kg (4) 1.96 * 10⁵ kg

A piece of news published before a rival newspaper can publish it is called a (n).

A student wishes to investigate how the material of which an object is made affects how the object changes temperature. The student will heat objects to a temperature of 50C, then see how long it takes the objects to cool down to room temperature.

true or false the precision of calculated answers is limited by the least precise measurement used in the calculation

Explain how electromagnetic waves are produced. I

This is the number of protons and neutrons in the nucleus of any atom.

What is the velocity of a snail that travels 0.20 meters in 1 minute

Is erosion a constructive or destructive force and why?

How much power is used by a 6.0-V flashlight battery that draws 0.5 A of current

Compare and contrast the results of a crash while the passengers are not wearing seat belts and while they are wearing seat belts