| A | B |
|---|
| what is the smallest particle of an element that still has all the properties of that element? | molecule |
| what are the three suvatomic particles that make kup all atoms? | protons, neutrons, and electrons |
| what are positively charged subatomic particles?where are they located? | protons, nuclues |
| what are subatomic particles with no charge called? where are they located? | neutrons, nucules |
| what are negatively charged subatomic particles called? where are they located? | on energy levels |
| waht is the number of protons in a atom also known as? | atomic number |
| what is the number of protons plus neutrons? | mass number |
| when you change the number of newturons in an atom you get...... | a different element |
| when you change the number of neutron in an atom? | it changes the electrical charge? |
| matter comes in what three phases? | solid, liquid, and gas |
| what makes matter change from one phase to antoher? | by adding or taking away heat |
| what is a combination of two or more different kinds of atoms? | compound |
| a compound has (same, different) properties that is makes up | different |
| to form compounds atoms must,(blank),(blank)or (blank) electrons | gain, lose, or share |
| how do you find the number of neutrons for an element? | mass#-atomic# |
| how do you find the number of of protons for an element? | same as the atomic# |
| how do you find the number of electrons for an element? | same as the atomic# or same as the # of protons |
| which is bigger , molecule or an atom? | molecule |
| list three ways you can tell if a chemical reacton is occuring? | milk souring(chunkage), a new odor is prouduced, color change |
| which of these are elements and which of these are compounds? SO, Al,Na,CO2, NaCl | compound, element, element,compound, compound |
| how many atoms of each element are in this formula?4NH 4 OH | N-4 H-17 O-4 |
| how many atoms of each element are in this formula?5Mg(OH)2 | Mg-5 O-10 H-10 |
| what type of bond do you get when you combine a metal and a nonmetal? | ionic |
| what type of bond do you get when you combine a metal and a metal and a nonmetal and a nonmeaal, or two of the same element? | covalent |
| ionic bonds hold together because..... | the metal and nonmetal have opposite charges so they attract eachother. |
| covalent bonds are held together because...... | the attraction between the nucleus and shared electrons holds the atoms together. |
| how many electrons will the first three enery levels hold? | 2,8,8 |
| what do we call the elements on the far right of he periodic table? | noble gases |
| why are noble gases inert(non reactive)? | because there outer enery level is full |
| what are valence electorons? | the electrons of the last enery level |
| what type of bonding involves the transfer of electrons? | ionic |
| what type of bonding causes elements to share valence electrons? | covalent |
| what type of charge does an atom have if you take away an electron? if you add one? | negative, positive |
| what type of bond would form between O and Cl? Mg and F? Zn and Zn? | covalent, ionic, covalent |
