Which of the following states of matter has a definite shape? A. solids and liquids only B. liquids and gases only C. liquids only D. solids only

How is the Hfusion used to calculate the energy required to vaporize a volume of liquid

MATH. Tom bought 15 party hats priced at 3 for $0.65 and 56 noisemakers priced at 7 for $1.25. What was the total cost of the hats and noisemakers, not including tax? A. $9.75 B. $8.75 C. $10.70 D. $13.25

What do the colors produced by fireworks indicate? a. a physical change c. a state change b. a chemical change d. an element change

Which list includes elements with the most similar chemical properties? A) Br, Ga, Hg B) Cr, Pb, Xe C) O, S, Se D) N, O, F

65 million years ago there was a mass extinction that is best kno

4. Electronegativity is a measure ofA) the energy needed to remove an electron from an atom. B) the energy released when an electron is added to an atom. C) the magnitude of the negative charge on an electron.

Mitochondria are responsible for dna maintenance storage making protein providing energy for the cell

A hot air balloon contains 40.0 liters of helium gas at 203 kilopascals. What will be the volume of the helium when the balloon rises to an altitude where the pressure is only 35.0 kilopascals?

Which characteristic of a substance is considered a chemical property

How does the genetic code lead to variation?