Equipment Lab Scientific Notation Metric System Dimensional Analysis

Today I will be able to: ◦ Identify the equipment used in the chemistry laboratory. ◦ Analyze the relevance of scientific notation by completing an activity. ◦ Calculate multiplication and division problems using scientific notation. ◦ Understand the metric system and how it is used to make measurements ◦ Apply the metric system to problem solving Informal assessment – monitoring student interactions and questions as they complete the lab and practice Formal assessment – analyzing the lab, scientific notation practice and exit ticket Common Core Connection ◦ Make sense of problem and persevere in solving them ◦ Reason abstractly and quantitatively

Lesson Sequence Evaluate: Warm Up Explore: Equipment Lab Engage: Small Group Discussion Engage: Small Group Scientific Notation Activity Explain: Scientific Notation Notes Elaborate: Scientific Notation Practice Evaluate: Scientific Notation Activity Explain: Metric System Evaluate: Exit Ticket

Warm- Up What are you expected to be doing when the bell rings? When is an acceptable time to use the bathroom? What happens if I am late to class? When is make up work due? What must be worn to participate in lab? Sign Pride Pact Turn in Bubble Lab

Objectives Today I will be able to: ◦ Identify the equipment used in the chemistry laboratory. ◦ Analyze the relevance of scientific notation by completing an activity. ◦ Calculate multiplication and division problems using scientific notation. ◦ Understand the metric system and how it is used to make measurements ◦ Apply the metric system to problem solving

Homework Signed Syllabus Finish Scientific Notation/ Dimensional Analysis Practice

Agenda Warm Up Equipment Lab Small Group Discussion Small Group Scientific Notation Activity Scientific Notation Notes Scientific Notation Practice Scientific Notation Activity Metric System and Dimensional Analysis Notes Dimensional Analysis Practice Exit Ticket

Equipment Lab Travel to each station in the lab and identify the equipment. When you finish identifying the equipment complete the worksheet titled “Lab Equipment” we will review as a class.

Scientific Notation Notes

Discussion What is scientific notation?

Discussion So what?

In groups, brainstorm 3 examples of things that scientists/ engineers could study that would be large enough or small enough for scientific notation to be used to describe them

Each group has an envelope containing numbers in scientific notation and standard notation. Put the numbers in order from smallest to largest on your desk.

Scientific Notation A way to write numbers that are too big or too small to conveniently write in decimal notation Standard scientific notation format ◦ 6. 02 x 1023 Notice there is only one number before the decimal

Standard Notation to Scientific Notation Standard Notation – numbers that are in decimal form When given a number in standard notation move the decimal to the left or right until there is only one number before the decimal The number of spaces moved to the left or right becomes the exponent The sign on the exponent is ◦ Positive – moved the decimal to the left ◦ Negative – moved the decimal to the right

Standard Notation to Scientific Notation cont. Examples ◦ 489000000 (Standard Notation) Move the decimal to the left, exponent is positive ◦ 4. 89 x 108 (Scientific Notation) ◦ 0. 000123 (Standard Notation) Move the decimal to the right, exponent is negative ◦ 1. 23 x 10 -4 (Scientific Notation)

Scientific Notation to Standard Notation Start with number in scientific notation Look at the sign on the exponent ◦ If positive, move the decimal to the right ◦ If negative, move the decimal to the left Use the exponent to tell you how many places to the move the decimal point

Scientific Notation to Standard Notation cont. Examples ◦ 3. 47 x 105 (Scientific Notation) Exponent is positive, move to the right ◦ 347000 (Standard Notation) ◦ 7. 82 x 10 -4 (Scientific Notation) Exponent is negative, move to the left ◦ 0. 000782 (Standard Notation)

Multiplying/Dividing in Scientific Notation Multiply or divide the numbers first ◦ (don’t include x 10 exp) When multiplying, add the exponents together When dividing, subtract the exponents Make sure there is only one number before the decimal place in scientific notation. You may have to move the decimal so there is only one

Multiplying/Dividing Scientific Notation cont. Examples (2. 0 x 105)(7. 0 x 104)= ◦ 1. 40 x 1010 (6. 0 x 107) / (3. 0 x 109)= ◦ 2. 0 x 10 -2

Scientific Notation Practice Complete the practice at your desk. We will review selected problems as a class.

Activity Find your matching partner with the same number in Standard form or Scientific Notation!

Metric System

The Metric System International System of Units (SI) Easy to use mathematically More divisions – improves accuracy of measurements Used internationally – easier to communicate

Prefixes Giga (G) – 109 Mega (M) – 106 Kilo (k) – 103 Hecto (h) – 102 Deka (D) - 101 Base Unit – 1 Deci (d) – 10 -1 Centi (c) – 10 -2 Milli (m) – 10 -3 Micro (u) – 10 -6 Nano (n) – 10 -9 Pico (p) – 10 -12

SI Base Units Length = meter (m) Mass = kilogram (kg) - Gram is commonly used (g) Time = seconds (s) Temperature = Kelvin (K) Count/Quantity = mole (mol) Electric Current = ampere (A) Luminous Intensity = candela (cd)

Derived Units Come from combinations of SI base units Volume – space an object takes up - Solids – cubic centimeter (cm 3) - Liquids – Liter (L) - 1000 cm 3 = 1 L - 1 cm 3 = 1 ml

Derived Units Density = mass/volume - g/cm 3 or kg/cm 3 or g/ml

Converting Metrics Kids Have Dropped Over Dead Converting Metrics K = Kilo H = Hecto D = Deka O = One (base unit) – 1 gram, 1 liter, 1 meter D = Deci C = Centi M = Milli

Exit Ticket Ms. Ose will hold up 3 pieces of lab equipment. Write down the scientific name and the function and which unit would be the most effective to measure it in.