If energy is shown on the product side of the equation, then the

1.

reaction

A.

is exothermic.

B.

is endothermic.

C.

does not require any activation energy.

D.

does not include

any

other product.

What's the difference between homogeneous and heterogeneous mixtures?

How do I balance this equation? Cr2O3 (s) + C (s) →Cr (s) + CO (g)

At what temperature is a neon a: 1) Solid 2) Liquid 3) Gas

An electrician cuts a 10-meter-long copper wire having a density of 8.9 g/cm3 into 10 equal parts. What is the density of each small part? One-tenth of 8.9 g/cm3 since density is an intensive property One-tenth of 8.

Where would you look for igneous rocks? Why?

What is it called when copper can be stretched into s thin wire?

What river basin provide river water to charolette and gastoia?

8. Calculate the molar mass of an alkane with the mole- cular formula C H18.

What is DNA? What information does it carry? Where is DNA located?

5. Differences in which property allow the separation of a sample of sand and seawater by filtration? A) concentration of ions B) volume of sample C) mass of sample D) particle size