Atoms stick together to form molecules by sharing electrons. Electrons on the atoms that make these molecules keep moving and making the poles, mean charges at poles increase or decrease. when poles from nearby molecule get near, attraction among them forces them to connect with each other. and help them keep sticking.
Q. Why is nitrogen a gas at room temperature quizlet?
Why is nitrogen a gas at room temperature and carbon is a solid? Less energy is required (lower temperatures) to overcome these interactions. It is the LDFs (not the bonds within the molecules) that are overcome when the solid melts. You just studied 27 terms!
Table of Contents
- Q. Why is nitrogen a gas at room temperature quizlet?
- Q. Why are the molecules of hydrogen sticking together?
- Q. Why is oxygen positive and hydrogen negative?
- Q. Why are electrons pulled towards oxygen?
- Q. Why is water considered a polar molecule 2 points?
- Q. Why is h20 polar and CO2 nonpolar?
- Q. Why is water called a polar molecule quizlet?
Q. Why are the molecules of hydrogen sticking together?
Hydrogen bonds are attractions of electrostatic force caused by the difference in charge between slightly positive hydrogen ions and other, slightly negative ions. These attractions are much weaker than true ionic or covalent bonds, but they are strong enough to result in some interesting properties.
Q. Why is oxygen positive and hydrogen negative?
The oxygen atom is more electronegative (it is better than hydrogen at attracting electrons, because it has more positively charged protons in its nucleus), and this makes it slightly more negative; consequently, the hydrogen atoms are unable to hold the electrons near to them, and become slightly more positive.
Q. Why are electrons pulled towards oxygen?
Explanation: Oxygen has a positive charge of +8 due to having 8 protons. The positive charge pulls the electrons closer to the nucleus. This means that the electron density will be drawn closer to the Oxygen than the Hydrogen.
Q. Why is water considered a polar molecule 2 points?
Since oxygen has a higher electronegativity than hydrogen, the electrons of the molecule tend to group closer to the oxygen than to the hydrogen atoms. Therefore, water is said to be a “polar” molecule, which means that there is an uneven distribution of electron density.
Q. Why is h20 polar and CO2 nonpolar?
Both CO2 and H2O have two polar bonds. However the dipoles in the linear CO2 molecule cancel each other out, meaning that the CO2 molecule is non-polar. The polar bonds in the bent H2O molecule result in a net dipole moment, so H2O is polar.
Q. Why is water called a polar molecule quizlet?
water is called polar molecule, its two hydrogen atoms are joined to one oxygen atom by single covalent bonds, but the electrons of the covalent bonds are not shared equally between oxygen and hydrogen this unequal sharing makes water a polar molecule.
