List 3 indicators that a chemical reaction has occurred.

Will a change in the frequency of sound affect its speed?

When two satillites orbit at at different distances which goes faster?

Which car is accelerating? A) a car that is unmoving B) a car that rounds a curve at a constant speed C) a car that travels in straight line at a constant speed D) a car that is set to a constant speed of 60 miles per hour

As scientists research, they often find information that does not fit with current theories. What happens when new, contradictory information is found? a. new information is ignored b. old theories are completely discarded Eliminate c.

What is the velocity of a car that travels 556km northwest in 3.2 hours

When studying atoms, scientists can ignore the blank force between charged particles that make up the atoms because it is many millions of times smaller than other forces in the atom

Burning involves a chemical change. true or false

What is the fate of the universe knowing that heat flow from hot to cold until there is equilibrium of temperature?

Limestone chips dissolve after they are placed in a beaker of dilute acid. Which geologic process is this most similar to?

In air an object weighs 15N. when immersed in water it weighs 12N. when immersed in another liquid it weighs 13N. determine the density of d object and that of d other liquid