1. What is an atom made of? Day

Take test. Finish and hand in Postlab. Find something quiet to work on. Day

1. Calculate and record your test percentage (I’m handing them back). 2. Did you meet your goal? WHY or WHY not? (assess and reflect on your preparation). 3. Study (preparation) Plan for next test? 4.Set a new goal: IF you did not meet your goal it stays the same as last time. IF you met your goal you must improve by at least one point Day

What does the inside of an atom look like, and how do we know? Day

1. Brainstorm with your discussion partner: everything you know about an atom. 2. Look up the definition in the back of the book, and record it 3. Draw an atom of hydrogen. Draw an atom of oxygen. (There is no wrong answer at this time… Draw something!)

ATOM Neutron Proton Electron (0) (+) (-) Nucleus

When and Why do we use models? In chemistry:

1. Cells are to life as ______ are to matter (think building blocks). Day

What does the inside of an atom look like, and how do we know? Day

Read pages AND answer #s 1-4 on page 104

I.Early Greeks Everything is made of 4 elements: _______________, _______________, _______________, and _______________. These combine and interact to make everything. Earth Fire Air Water

Continuous matter – accepted for nearly 200 years -Aristotle & Plato 400 B.C. Basic particle = an atom – “indivisible” -Democritus The Atom in Ancient Greece

After the Greeks, Before 1600… Alchemists Conducted ___________. Established standard lab ___________. Developed __________. Created lab _________. Tried to change ____ into ____ through transmutation experiments techniques medicines apparatus lead gold

Early Scientists ’s Robert Boyle One of the first scientists to rely on ____________ to gain new ___________. Founder of the ________________ Boyle’s Law relates ________ to the _______ of a ____. experiments knowledge Scientific Method pressure volume gas

Developed __________________ Early Scientists ’s Sir Isaac Newton Laws of motion Newton’s Cradle

Sparks of Knowledge ’s Benjamin Franklin Demonstrated that _______________ is _______________ and that objects can have _______________ or _______________ charge. lightning electrical positivenegative

Sparks of Knowledge ’s Law of conservation of matter states that during any ________ or _________ process, matter is neither _______ nor ________ In a reaction, the mass of the reactants ___________ the mass of the products. chemicalphysical created destroyed E Q U A L S

Sparks of Knowledge ’s Joseph Proust Developed the law of definite proportions or constant composition which states that the _____ ratio of elements in a compound is always _________. Examples: mass the same Water 1g H : 8g O Carbon Dioxide 3g C : 8g O

Law of Conservation of Mass – Mass is neither destroyed nor created Reactants mass = Products mass Law of Definite Proportions – A chemical compound contains the same elements in exactly the same proportions by mass regardless of the size of the sample Lasting Laws

Dalton’s Atomic Theory (1800s): 1.All matter is composed of extremely small particles called atoms. 2.Atoms of a given element are identical in size, mass, and other properties; atoms of different elements differ in size, mass, and other properties. 3.Atoms cannot be subdivided, created, or destroyed. 4.Atoms of different elements combine in simple whole- numbered ratios to form chemical compounds. 5.In chemical reactions, atoms are combined, separated, or rearranged. Modern Atomic Theory: 1.All matter is composed of extremely small particles called atoms. 2.A GIVEN ELEMENT CAN HAVE ATOMS WITH DIFFERENT MASSES 3.ATOMS ARE DIVISIBLE INTO EVEN SMALLER PARTICLES. 4.Atoms of different elements combine in simple whole- numbered ratios to form chemical compounds. 5.In chemical reactions, atoms are combined, separated, or rearranged.

Catalyst Exothermic reaction Law of conservation of mass Proton Gold Alchemist Law of Definite Proportions Democritus Electron Precipitate Reactants mass = Products mass

The spirit, the will to win, and the will to excel are things that endure. These qualities are so much more important than events." -- VINCE LOMBARDI, HALL OF FAME FOOTBALL COACH VINCE LOMBARDI 11-6 Read and record the quote below. Then reflect in any way you see fit (doesn’t have to relate to chem. or science). Where / when do you feel the “will to win and excel”?

EVERYONE get your lab paper out If you were here Friday, review your goal for lab. What is the law of definite proportions? Why does it apply to compounds and not homogeneous mixtures? Periods 3 & 6 Periods 1 & 5

True / False? An atom can be thought of as the smallest piece of an element or compound that retains the identity and properties of that element or compound. 2. Protons are found in the ___ & have a ___ charge. 3. Thomson’s plum pudding model was the first to show ___. 4. Why does the law of definite proportions apply to compounds and not homogeneous mixtures?

Read AND complete the section assessment on page 114 #s 7-11 – Due Tuesday

Dalton’s Atomic Theory (1800s): 1.All matter is composed of extremely small particles called atoms. Modern Atomic Theory: 1.All matter is composed of extremely small particles called atoms.

Dalton’s Atomic Theory (1800s): 2.Atoms of a given element are identical in size, mass, and other properties; atoms of different elements differ in size, mass, and other properties. Modern Atomic Theory: 2.A GIVEN ELEMENT CAN HAVE ATOMS WITH DIFFERENT MASSES

Dalton’s Atomic Theory (1800s): 3.Atoms cannot be subdivided, created, or destroyed. Modern Atomic Theory: 3.ATOMS ARE DIVISIBLE INTO EVEN SMALLER PARTICLES.

Dalton’s Atomic Theory (1800s): 4.Atoms of different elements combine in simple whole- numbered ratios to form chemical compounds. Modern Atomic Theory: 4.Atoms of different elements combine in simple whole- numbered ratios to form chemical coms.

Dalton’s Atomic Theory (1800s): 5. In chemical reactions, atoms are combined, separated, or rearranged. Modern Atomic Theory: 5. In chemical reactions, atoms are combined, separated, or rearranged.

Read AND complete the section assessment on page 114 #s 7-11 – Due Tuesday

ATOM ___________(_) __________(_) Nucleus ___________(_)

Dalton’s Atomic Theory (1800s): 1.All matter is _________________ ___________________________ ___________________________. 2.Atoms of a given element are identical in size, mass, and other properties; atoms of different elements differ in size, mass, and other properties. 3.Atoms cannot be subdivided, created, or destroyed. 4.Atoms of different elements combine in simple whole- numbered ratios to form ___________________________. 5.In chemical reactions, atoms are ___________________________ ___________________________. Modern Atomic Theory: 1.All matter is composed of extremely small particles called atoms. 2.A GIVEN ELEMENT CAN HAVE ATOMS WITH DIFFERENT _____________. 3.ATOMS ARE _____________ INTO EVEN SMALLER PARTICLES. 4.Atoms of different elements combine in simple whole- numbered ratios to form chemical compounds. 5.In chemical reactions, atoms are _____________________ _______________________.