Our body needs iron. Certain foods are rich in iron and iron tablets are usually recommended by doctors. but neither the food nor tablets are hard like iron? Why?

Light from the sun transfers solar energy to the earth system. Sunlight travels to earth as

How much force is needed to accelerate a 1,000 kg car at a rate of 9 m/s2? A. 13,500 N B. 1,000 N C. 9,000 N D. 4,500 N

Robert leaves a chocolate bar in his car while attending school all day. When he goes to his car in the afternoon, the bar has changed into a gooey liquid. Which statement BEST explains what happened to Robert's chocolate bar?

Which of the following enzymes breaks down the "glue" that holds cells together? 1) Hyaluronidase 2) Streptokinase 3) Fibrinolysin 4) Collagenase

Why does a rocket continue to rise after it runs out of fuel

How do aqueous solutions of ionic and molecular compounds differ

Which reaction represents an unbalanced neutralization reaction? Na + H2O NaOH + H2 HNO3 + NaOH NaNO3 + H2O NaNO3 + H2O HNO3 + NaOH H2O H2 + O2

How does the health of polar bears indicate the health of the environment

Our body needs iron. Certain foods are rich in iron and iron tablets are usually recommended by doctors. but neither the food nor tablets are hard like iron? Why?

Under which conditions are gases most soluble in water?