T ODAY S A GENDA 10/2/15 Myth Busters Recap STEM Kids Conference Introduction to Chemistry Homework: STEM Kids Conference- Application due by NEXT Thursday Myth Busters Recap STEM Kids Conference Introduction to Chemistry Homework: STEM Kids Conference- Application due by NEXT Thursday Q UICK W RITE - SINK ( PG. 25) What is Chemistry? T ODAY S A GENDA 10/5/15 Myth Busters Write Up- DUE Today Introduction to Chemistry Homework: STEM Kids Conference- Application due by NEXT Thursday Myth Busters Write Up- DUE Today Introduction to Chemistry Homework: STEM Kids Conference- Application due by NEXT Thursday C HEMISTRY R EVIEW Elements, Atoms, Molecules, Compounds B ACK TO THE P APERCLIP L AB . In your SINK, do a QUICK WRITE: What is water? A LL ABOUT WATER! Water is a compound Water is made up of molecules Water has the chemical formula H 2 O Each molecule of water is made up of two elements: Hydrogen (H) and Oxygen (O) Water is made up of 3 total atoms: 2 Hydrogen atoms and 1 Oxygen atom I MPORTANT D EFINITIONS Periodic Table: An arrangement of the elements by their atomic number (# of protons in the nucleus) Element: One of the basic substances that forms the building blocks of matter Atom: The smallest particle of an element P ERIODIC T ABLE OF E LEMENTS I MPORTANT D EFINITIONS Compound: A substance that is formed when two elements combine chemically Molecule: The smallest particle of a compound Chemical Formula: tells which elements and how many atoms of each are present in the compound T ODAY S A GENDA 10/6/15 Chemistry- Review of atoms, elements, molecules, compounds Homework: 1.) Reflection on vocabulary, and identifying elements and number of atoms in a compound 2.) Waters Field Trip & STEM Kids Conference- Applications due by TOMORROW Chemistry- Review of atoms, elements, molecules, compounds Homework: 1.) Reflection on vocabulary, and identifying elements and number of atoms in a compound 2.) Waters Field Trip & STEM Kids Conference- Applications due by TOMORROW H OW M ANY A TOMS ? W HAT IS CHEMISTRY ANYWAY ? Click on the image: W HAT DOES WATER LOOK LIKE ? This is called a Ball and Stick Model. W HAT DOES WATER LOOK LIKE ? This is called a Ball and Stick Model. Ball Stick B ALL A ND S TICK M ODEL Ball: represents an atom Atoms of different elements are represented as different sizes or colors Stick: represents a chemical bond between atoms W HAT DOES WATER LOOK LIKE ? H H O W HY DO W ATER M OLECULES HAVE S URFACE T ENSION ? H H O ++ - H H O ++ - H H O ++ - H H O ++ - H H O ++ - Opposite charges from the different parts of the different molecules attract each other (they STICK TOGETHER) This is also why water EXPANDS when it freezes! Only the O from one molecule can be next to an H from another molecule, causing space to exist between adjacent molecules. W HY DO W ATER M OLECULES HAVE S URFACE T ENSION ? W ATER S URFACE T ENSION T ODAY S A GENDA 10/7/15 Chemistry- Review (atoms, elements, molecules, compounds) Homework: 1.) Reflection on vocabulary & identifying atoms and elements in a compound 2.) Waters Field Trip & STEM Kids Conference- Applications due by TOMORROW Chemistry- Review (atoms, elements, molecules, compounds) Homework: 1.) Reflection on vocabulary & identifying atoms and elements in a compound 2.) Waters Field Trip & STEM Kids Conference- Applications due by TOMORROW L ET S P RACTICE ! Atoms are like letters & Molecules are like words- the letters (atoms) are put together to form molecules Al C How many elements? ________ How many atoms of Al? ________ How many atoms total? __________ 2 4 7 NH CN How many elements? ________ How many atoms of N? ________ How many atoms total? __________ 3 2 7 BaF How many elements? ________ How many atoms of Ba? ________ How many atoms total? __________ 2 1 3 BeCl How many elements? ________ How many atoms of Cl? ________ How many atoms total? __________ 2 2 3 CaCO How many elements? ________ How many atoms of O? ________ How many atoms total? __________ 3 3 5 Cu O How many elements? ________ How many atoms of Cu? ________ How many atoms total? __________ 2 2 3 T ODAY S A GENDA 10/8/15 Minor Celebration of Knowledge- Chemistry Waters Field Trip & STEM Kids Conference- Applications due TODAY Reading Chemical Formulas- Notes Homework: Have a great long weekend Have a great long weekend Minor Celebration of Knowledge- Chemistry Waters Field Trip & STEM Kids Conference- Applications due TODAY Reading Chemical Formulas- Notes Homework: Have a great long weekend Have a great long weekend