Chemistry
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30 terms
Terms | Definitions |
|---|---|
 Name the scientists that made contributions to the atomic theory | Dalton, Thomson, Rutherford, Bohr |
| Elements that share both characteristics of metals and nonmetals are called what | Metalloids |
| Elements that belong to the same group have the same number of what? | Valence Electrons |
| A synthesis reaction between Sodium (Na) and Chlorine (Cl) may produce what? | NaCl |
| The three main groups of elements on the periodic table are what? | metal, nonmetals, and metalloids |
| The nucleus of an atom contains what two particles? | protons and neutrons |
| What scientist created the first periodic table | Mendeleev |
| What type of atom does it become when it loses an electron | a positive |
| Elements in the same vertical column in the periodic table belong to what? | same group |
| Elements in the same horizontal row in the periodic table belong to the same what? | period |
| When an element has a different number of neutrons what is it called | Isotope |
| The number of protons in an atom determines it's what | atomic number |
| To find the number of neutrons in an atom, what must you do? | take the atomic number and subtract it from the atomic mass |
| Valence electrons determines an atom what | electrical charge and how it will bond |
| This states that mass cannot be created or destroyed | Law of conservation of mass |
| How many atoms are in the molecule 5P2O3 | 25 |
| What is the Valence Electron for Chlorine | 7 |
| Name at least two characteristics of Physical Property | Malleable, Ductility, luster, |
| A force of attraction that holds 2 atoms together is called what? | Chemical Bond |
| This is formed when electrons are transferred between atoms | Ionic Bond |
| When balancing chemical equations, what is the one thing that can be changed and/or manipulated | Coefficients |
| How many atoms are in 4K2CO3 | 22 |
| In an ionic bond, bonds are formed between what two things | metals and nonmetals |
| What is another word for positive atoms | Cation |
| In an ionic bond, which element loses electrons | the metal, always |
| when writing an ionic bond formula, which atom is written first | the metal |
| Bond that happens when atoms SHARE electrons | Covalent Bond |
| What elements bond in Covalent Bonds | two nonmetals |
| Name the following: NaBr P2O5 CuOH | Sodium Bromide diphosphorus pentoxide Copper(I) Hydroxide |
| Write formulas for the following Silicon dioxide Nickel(III) Sulfide Manganese (II) phosphate | SiO2 Ni2S3 Mn3(PO4)2 |
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