Why do elements in the same group have similar properties

Which of the following groups of carbon compounds includes enzymes? lipids proteins carbohydrates nucleic acids

the valence of aluminum + 3 and the valence of chlorine is - 1 the formula for aluminum chloride is correctly written as

Which of the following type of radiation is represented by 0 over negative 1 e? A. alpha emission B. beta emission C. positron emission D. gamma rays

What are salt? How they are used

Wind eroding rocks. Is it a chemical or physical change?

What are two fungal skin infections that humans can contract? pneumonia and ergot disease ergot disease and athlete's foot athlete's foot and ringworm ringworm and pneumonia

A critical biotic factor in Yellowstone National Park is A) geographic isolation B) high elevation C) high temperature in the summer D) population of wolves E) proximity to water

If energy can neither be created nor destroyed in a chemical reaction, what can happen to the energy

Effect of ph on conformation of aplha helix

How can we tell when something is polar or non-polar in an Inter-molecular Force?