comparing elements, molecules, compounds, & mixtures
TRANSCRIPT
Comparing Elements, Molecules, Compounds, & Mixtures
Making a Flip Book
1. Fold a piece of paper lengthwise
2. Fold it in half 2 more times the other direction to divide it into 4 equal parts.
Flip Book (cont.)
3. Cut the top flap of each of the four folded creases. Put the words: Element, Molecule, Compound, and Mixture on the front of each flap.
4. Take notes about each chemistry vocabulary word from the following slides.
ElementElement Molecule Compound Mixture
Element
Each Element is a unique atom made of protons, neutrons, and electrons.
Examples:
O, Fe, Na, Hg, Au, K
Molecule
Any two or more atoms bonded together chemically. Includes two or more of the same or two or more different atoms.
Water Molecule H2O Ozone Molecule O3
Examples:
O2, H2, O3, Cl2, N2, NH3, CO2, H20, NaCl, CuSO4, NaHCO3
Compound
Two or more different elements bonded together chemically.
All compounds are also molecules, but not all molecules are compounds!
Water (H2O) Table Salt (NaCl) Carbon dioxide (CO2)
Examples:
NH3, CO2, H20, NaCl, CuSO4, NaHCO3
Mixture
Two or more substances combined physically. There is no chemical bond.
Examples:
Salad Lemonade Humans Trail Mix
What do you think?
Determine whether the following are an element, molecule, compound, or mixture:
1.
an element
2. Methane
Both a molecule and a compound
4. Spaghetti and meatballs
a mixture
