Elements, Compounds, Molecules, and Mixtures

Bell Work 11/17/15 What do salt, sugar, baking soda , and water all have in common?

Bell Work 11/17/15 What do salt, sugar, baking soda , and water all have in common? They are all compounds! Because most elements take part in chemical changes easily, they are rarely found alone in nature. Instead, they are found combined with other elements as compounds.

Student Learning Objectives: SPI0807.9.4- Can I differentiate between a mixture and a compound SPI0807.9.8- Can I interpret the results of an investigation to determine whether a physical or chemical change has occurred. TOC: # EMC Foldable

Video TOC # EMC Foldable Elements Compounds Molecules Mixtures

Inside the foldable: Definition: Examples:

Element: A pure substance that cannot be broken down into a simpler substance by ordinary means Element = One or more of the same atoms NOT bonded together.

Gold – Au Silver – Ag Oxygen – O Hydrogen – H Examples: Gold – Au Silver – Ag Oxygen – O Hydrogen – H

All compounds are molecules! A pure substance made of two or more different elements chemically bonded together All compounds are molecules!

Water – H2O Carbon Dioxide – CO2 Table salt – NACL Examples: Water – H2O Carbon Dioxide – CO2 Table salt – NACL Table Sugar- C12H22O11

Molecule: A group of atoms (same or different) held together by a chemical bond. NOT all molecules are compounds Examples: Water – H2O Oxygen – O2 Hydrogen – H2

Video Elbow Partner: Discuss what is the difference between and molecule and a compound?

Mixture: A combination of two or more substances that are not chemically bonded and are not in fixed proportion. Most natural substances are mixtures. NO Chemical reaction occurs when you combine 2 or more substances. No fizzing, No smoke, No precipitate, No explosion, No heat or light given off

Examples: Tossed salad Oil & vinegar Bowl of cereal Kool-Aid Salt Water

Discuss with Elbow Partner: Element, compound, or mixture?

Element, compound, or mixture? Table Sugar= C12H22O11 Compound C25H33N5O7 Element mixture

Whiteboard Review Activity: Is this an element, compound, or mixture? Write a capital E if you think it is an element Write a capital C if you think it is a compound Write a capital M if you think it is a mixture

Is this an element, compound, or mixture? Ar

Is this an element, compound, or mixture? Monster Energy Drink

Is this an element, compound, or mixture? C6H12O6

Is this an element, compound, or mixture? Pizza

Is this an element, compound, or mixture?

Is this an element, compound, or mixture? Uut

Exit Ticket Elements Molecules Compounds