Chemical Symbols and Equations

Elements, Molecules, and Compounds Watch the video below and take notes as you watch Topic Summary REMEMBER! Write them down.Elements - a single type of atom with a unique number of protonsMolecule - Two or more of ANYelement chemically combinedCompound - Two or more DIFFERENT elements chemically combinedAll compounds are molecules, but not all molecules are compoundsA chemical formula is a plan or recipe for a particular substance, such as sugar (C6H12O6)When looking at a chemical formula, to determine the number of ELEMENTS count the CAPITAL LETTERSC6H12O6 -Three different ELEMENTSTo determine the number of ATOMS for a particular element, look at the little numbers called SUBSCRIPTC6H12O6- 6 Carbon, 12 Hydrogen, 6 Oxygen for a total of 24 atoms Match the word with the definition Molecule Two or more elements chemically combines Compound Two or more DIFFERENT elements chemically combined Element A single type of atom, defined by a unique number of protons Determine if the items below are Elements, Molecules, or Both Element H Au Fe O Ca Molecule CO2 NaCl FeO2 C6H12O6 SO4 Both Na2 P4 Ag3 S6 Po3 H2SO4 is... an element a molecule a compound both a molecule and a compound both an element and a molecule Ca is... an element a molecule a compound both a molecule and a compound both an element and a molecule O2 is... an element a molecule a compound both a molecule and a compound both an element and a molecule CO2 is... an element a molecule a compound both a molecule and a compound both an element and a molecule C8H10N4O2 Using the picture above, fill in the blanks using the appropriate numbers Caffeine is a compound made of 4 different elements and a total of 24 atoms How many atoms are represented by Ca2? 2 1 3 C6H12O6 is the chemical formula for glucose (sugar). How many different elements are in this compound? 24 12 3 4 Carbon is considered an element while carbon dioxide is considered a compound. This is because carbon dioxide is – a gas at room temperature. made of two different elements. given off by green plants. none of these Which statement about atoms and molecule is correct? Elements always exist as separate atoms Elements always exist as pairs of atoms called molecules Elements and compounds can exist as molecules Which of the models best represents CaCO3?A.) B.)C.)D.) A B C D Which statement correctly describes the formula? 4 elements and 12 totals atoms. 2 elements and 24 totals atoms 3 elements and 24 total atoms 4 elements and 24 total atoms Black = Carbon (C)White = Hydrogen (H)What would be the formula for ethane? CH4 CH6 C2H2 C2H6