Which of these sets of elements has similar properties?

chromium, magnesium, iron, cobalt

oxygen, nitrogen, carbon

strontium, magnesium, calcium, beryllium

hydrogen, helium, neon

How does a catalyst appear in a chemical equation

How many atoms are in HNO3

Based on periodic trends of electronegativity, what statement regarding the halogens is MOST accurate? A) Flourine has the lowest electronegativity. B) Iodine has the strongest tendency to attract electrons.

Introduction to Energy Instruction Active Describing Forms of Energy Match each form of energy with its description nuclear energy found when internal energy is transferred chemical energy found in the nucleus of an atom found in the flow of

When it is operating properly a chemical plant?

What is the molarity of a solution containing 45.78gMgCl2 dissolved in 3.00L of solution?

What kind of wavelength do television signals have? a. Short c. Long b. Intermediate d. Very rapid

What gene is responsible for tumor suppression? A. beta - galactoside B. p53 C. alpha goblin D. beta goblin

How does ur body maintain constant tempature on a hot day?

1. What is the probability of rolling a five on one die three times in a row? 2. The allele for a cleft chin, C, is dominate among humans. Using a punnet square, what are the results of a cross between parents with genotypes Cc and cc