Catalyst – February 1230, 2010

Monday Mystery Element!

It is an Alkali Metal. According to theory, it

was one of the original elements created during the Big Bang.

Can be useful as a mood-stabilizing drug.

Catalyst – February 1230, 2010Monday Mystery

Element! It is an Alkali Metal. According to theory, it

was one of the original elements created during the Big Bang.

Can be useful as a mood-stabilizing drug.

LITHIUM

Today’s Agenda

Catalyst Unit 1 Test Make-Ups TODAY @ LUNCH! Meet your new best friends in Unit 2! H, C, T, L, and Scientific Discovery Q&A with Frank! Exit Question

Homework: Finish RAP BATTLE assignment

Today’s Objectives

SWBAT differentiate between hypotheses, conclusions, theories, and laws.

SWBAT discuss how and why theories evolve over time.

Meet your new best friends in Unit 2! This unit is all about…

THE ATOM&

THE PERIODIC TABLE OF ELEMENTS

Why is learning about the atom so important?

The atom is the building block of

matter.Without the atom, we

would not exist!

Okay, so what about the periodic table? Is it really that cool?

The answer is YES!

The periodic table is organized in a SUPER FLY way the helps us

understand chemistry!

What is a hypothesis?

Duh!

A hypothesis is aneducated, testable

guess

What is a conclusion?

Duh!Key Point #1: A conclusion is a judgment based on information obtained in an experiment

Scientists apply DATA to aHYPOTHESIS to form a

CONCLUSION

What is a scientific theory?

Key Point #2: A scientific theory is not just a hunch! Explanation of observations Has been supported by many, many experiments

Can be disproved or modified

How is a THEORY different from a HYPOTHESIS?

HYPOTHESISTentative explanation

based on observations

ONE SCIENTISTExperiments must

stillbe conducted to test

hypothesis

I THINK I have an

idea!

How is a THEORY different from a HYPOTHESIS?

THEORYExplanation supported by many, many experiments

MORE THANONE SCIENTIST

Takes time!

What is a scientific law?

Key Point #3: A scientific law describes natural phenomena but does not explain why they happen Can use laws to predict Foundation of scientific discovery – theories and understanding based on laws

Examples

Kepler’s Law of Planetary Motion

Law of GravityLaw of Conservation of MatterTheory of EvolutionTheory that the Earth was flatAtomic Theory

Book Reading/Questions

Read section 4.1 in your book (pages 86-91)

Answer all questions on page 91

This is INDPENDENT WORK!

RAP BATTLE!

Exit Question

1. How do different experiments contribute to the development of a theory?

2. What is the difference between a theory and a law?