click below
click below
Normal Size Small Size show me how
2023 Basic Chemistry
Lessons 19-23
Question | Answer |
---|---|
What are groups of atoms that act like a single anion called? --ions ---radicals---molecules---photons | radicals |
What is a force that holds atoms together in a compound? Is it radials--ions chemical bonds or crystals | chemical bonds |
What is a group of atoms held together by covalent bonds called? ---ions---covets-molecules--electrons? | molecules |
What is a group of atoms that act like a single anion called? Is it polar---nonpolar-radicals-or a compound? | radicals |
What is a solid in which particles are in a regular repeating pattern called? --ions--crystals--molecules-protons | crysttals |
What is the formula for sodium and oxygen? | NA2O |
What is the formula for flourine and flourine? | F2 |
What is the formula for barium and chlorine? | BaCl2 |
What is the formula for hydrogen and bromine? | HBr |
What element is this class? Trick question | Boron --boooring! Extra credit if you say how much you enjoy chemistry!! |
What is the formula for calcium and iodine? | CAI2 |
What is a chemical bond formed by the transfer of electrons from the outer orbit of one atom to the outer orbit of another?--cation--anion-bond angle--ionic bond -covalent bond | ionic bond |
atom that gains electrons in an ionic bond----cation--anion-bond angle--ionic bond -covalent bond | anion |
chemical bond formed by the sharing of an electron pair between atoms----cation--anion-bond angle--ionic bond -covalent bond | covalent bond |
atom that loses electrons in an ionic bond----cation--anion-bond angle--ionic bond -covalent bond | cation |
angle formed by two covalent bonds----cation--anion-bond angle--ionic bond -covalent bond | bond angle |
A solid in which particles are in a regular repeating pattern is known as---covalent compound--crystal--radical---nonpolar compound | CRYSTAL |
the biggest difference between an ionic bond and a covalent bond is-- electrons are shared in covalent bonds and transfered in ionic bonds--only two electrons in ionic bonds-eight electrons are transfered in ionic bonds--covalent bonds are non polar | electrons are shared in covalent bonds and transfered in ionic bonds |
Which of the following is a example of a radical?--CL- or (PO4)2- or O2- or H+ | (PO4)2- |
The negative and the positive charges on the ions in an ionic compound always add up to ---8 or 2 or-0 or -1 | 0 |
The aluminum ion has a charge of AL+3. The sulfur ion is S-2. The formula for aluminum sulfide is Al3S2 or AIS or AIS3 or Al2s3 | Al2S3 |
What is the difference between a polar covalent bond and a nonpolar covalent bond? | In a polar bond, the electron pair is shared equally between the atoms |
Tell the kinds and numbers of the atoms in one molecule of ethyl alcohol: C2H5HOH | 2 carbons 6 hydrogens 1 oxygen |
Amonia NH3,--carbon dioxide-CO2 and water H20 have different shapes. Tell what shapes these molecules have. Explain why each molecule has the shape it does. | Nh3 has a pyramid shape. The one unshared electron pair pushes the other covalent bonds together. CO2 has a linear shape. The carbon shares two electron pairs with each oxygen.H20 is a bent molecule- two unshared electron pairs repel each other-OH bonds |
What does a molecular formula tell? | A molecular formula tells the kinds and numbers of an atoms in a molecule. h20 is a example |
What does an ionic formula tell? | An ionic formula tells the kind and relative number numbers of in an ionic compound.Na Cl which contains one Na for one Cl is a example |
a polyatomic atom is a radical-or photon -- a combination of atoms or a group of covalently bonded atoms that act like a single atom when combing with other atoms | - a combination of atoms or a group of covalently bonded atoms that act like a single atom when combing with other atoms |
what is a network solid?a covalent substance whose molecules are very large-a photon--the Jerry Seinfield show--a diatomic element | a covalent substance whose molecules are very large |