18. Which one of the following is generally NOT true about elements in the same period?
A. Number of valence electrons of the elements remains the same.
B. Elements at the right side of the period are smaller in size
C. Elements at the right side of the period have higher electron affinity.
D. Elements at the right side of the period have high metallic character.

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation. 8. when a 2.5 mol of sugar (c12h22o11) are added to a certain amount of water the boiling point is raised by 1 celsius degree. if 2.5 mol of aluminum nitrate is added to the same amount of water, by how much will the boiling point be changed? show all calculations leading to your answer or use 3 – 4 sentences to explain your answer. 9. if 5.40 kcal of heat is added to 1.00 kg of water at 100⁰c, how much steam at 100⁰c is produced? show all calculations leading to an answer. 10. the freezing of water at 0⁰c can be represented as follows: h2o (l) ↔ h2o(s) the density of liquid water is 1.00 g/cm3. the density of ice is 0.92 g/cm3. in 3 – 4 sentences explain why applying pressure causes ice to melt.

From the choices provided below, list the reagent(s) in order that will react with cyclopentanone to form the compound shown below.