Ahh the charges! I know just how to help!!
One thing I do is I draw each individual proton or electron out. Make sure you label each proton with a + and each electron with a -.
Then I cross them out. For each proton you cross out, cross out an electron and vice-versa.
If you end with a proton, then the atom is positive.
If you end with an electron, then the atom is negative.
If you end with nothing, then it is neutral.
HOPE THIS HELPS!!!!!! Let me know if you have more questions!!
Answer:
Atoms bind because, being united, they acquire a more stable situation than when they were separated and this allows them to exist in nature. This situation of greater stability usually occurs when the number of electrons that possess the atoms in their last level is equal to eight, structure that coincides with that of the noble gases.
Quemical bonding refers to the attraction forces that keep bonded the atoms in compounds, and there are two main types of chemical bonding: ionic and covalent bonding.
Explanation:
1)<u> Ionic bond:</u> results of the electrostatic interaction between ions, that results in the net transfer of one or more electrons from one atoms or group of atoms to other atom.
<em><u>Example of ionic bond:</u></em>
Sodium Chloride Na-Cl +, Sodium ion has a positive charge and chlorine ion has a negative charge, so chlorine seats an electron to sodium creating a ionic bond.
2)<u> Covalent bond:</u> In this type of chemical bond two atoms shares one or more pairs of electrons.
<em><u>Example of covalent bond</u></em>
Carbon monoxide is an example of a compound that has covalent bond, one carbon atom and one oxygen atom, linked by a triple bond that consists of two covalent bonds as well as one dative covalent bond.
Answer:
Ice floats on water because it is less dense than water. When water freezes into its solid form, its molecules are able to form more stable hydrogen bonds locking them into positions. Because the molecules are not moving, they're not able to form as many hydrogen bonds with other water molecules. Ice is a unique substance because it is solid-state — ice — is less dense than its liquid state. Because of this property, ice floats in water. Physical properties are characteristics of a substance. They do not change. Ice floats on water because it is less dense than water. When water freezes into its solid form, its molecules are able to form more stable hydrogen bonds locking them into positions.
Concentration = (2 * 0.1 * 100 + 1 * 0.150 * 200) / (200+100)
Concentration = 0.167 M of K+ ions