Sig Fig clicker worksheet practice. John counted out ten dollar bills. A.Exact B.Inexact (measured)

Slides:

Advertisements

Similar presentations

Significant Figures Every measurement has a limit on its accuracy based on the properties of the instrument used. we must indicate the precision of the.

Advertisements

Significant Figures (How Exact is Exact ?).

Significant Figures. Purpose Significant figures are used with any measurement Significant figures are used with any measurement They tell you something.

Significant Figures Part II: Calculations.

IB Chem I Uncertainty in Measurement Significant Figures.

Rule 1: When multiplying and dividing, limit and round to the least number of significant figure in any of the factors. Example 1: 39.0 mm X 385 mm X.

Significant Figures in Mathematical Operations The result of the mathematical operation cannot be expressed to any greater degree of certainty than the.

Scientific Notation Converting into Sci. Notation: –Move decimal until there’s 1 digit to its left. Places moved = exponent. –Large # (>1)  positive.

I II III I. Using Measurements CH. 2 - MEASUREMENT.

measured certain digits. last digit is estimated, but IS significant. do not overstate the precision 5.23 cm cm Significant Figures (Sig Figs) (uncertain)

Significant Figures Rules and Applications. Rules for Determining Significant Figures 1.) All Non-Zero digits are Significant. 1.) All Non-Zero digits.

Significant Figures 1.All non-zero digits are significant (2.45 has 3 SF) 2.Zeros between (sandwiched)non- zero digits are significant (303 has 3 SF)

How many significant figures are there in each of the following measurements? s km 400 mL mg.

Significant Figures in Calculations. A calculated answer cannot be more precise than the least precise measurement from which it was calculated. The answer.

Measurement and Sig. Fig. Practice

Scientific Notation and Conversion Factors. Numbers in chemistry are often very small or very large! For example, = 1 mole.

Drill – 9/14/09 How many significant figures: Now complete the back of the measurement worksheet from last week (the graduated.

I II III I. Using Measurements (p. 8-15) CH MEASUREMENT.

Uncertainty in measurement  Every measurement has error associated with it.  The more precise the measurement the less error.  Error in a measurement.

Adding and Subtracting Using Significant Figures How many digits are significant and how do you know?

Chapter 2 Significant Figures

SIGNIFICANT FIGURES AND DECIMAL PLACES

I II III Using Measurements MEASUREMENT. Accuracy vs. Precision  Accuracy - how close a measurement is to the accepted value  Precision - how close.

Significant Figures Homework: Working with Numbers handout # 1 – 13 Significant Figures handout #

Scientific Notation: A method of representing very large or very small numbers in the form: M x 10 n M x 10 n  M is a number between 1 and 10  n is.

SIGNIFICANT FIGURES Rules for Significant Figures.

Significant Figures Rules If the decimal is Present, then go to the Pacific side of the measurement, count the first non-zero number and count all other.

 1. Nonzero integers. Nonzero integers always count as significant figures. For example, the number 1457 has four nonzero integers, all of which count.

Significant figures A significant figure represents an actual measurement A measurement of all the digits known with certainty, plus one that is estimated.

Review Questions Write your answer, and nothing else, on the white board. Work together with people around you. Hold up your answer, but don’t say it too.

Convert into scientific notation:

Rules for Significant Figures

Unit 3 lec 2: Significant Figures

Significant Figures Notes on PAGE _____. Significant Figures Notes on PAGE _____.

Rules for Significant Figures

Significant Figure Rules

Significant figures A significant figure represents an actual measurement A measurement of all the digits known with certainty, plus one that is estimated.

Measurement: Significant Figures

Significant figures.

35 m = ______ cm 250 g = ______ kg 650 mm = ______ m 230 m = ______ km

Unit 2- Measurements- Significant Figures & Scientific Notation

Dimensional Analysis - warmup

How to Calculate Answers using Significant Figures

I. Using Measurements (p )

Significant Figure Review

Significant Figures All non-zero digits are significant (2.45 has 3 SF) Zeros between (sandwiched)non-zero digits are significant (303 has 3 SF)

Unit 1 lec 3: Significant Figures

Exact and Inexact Numbers

-Accuracy & Precision - Significant Digits -Scientific Notation

19th Amendment Takes Effect

How many sig figs are in each of the

I. Using Measurements (p )

Section 2-3 Using Measurements

CH. 2 - MEASUREMENT I. Using Measurements.

Significant Figures Practice Density Practice

MEASUREMENT Using Measurements C. Johannesson.

Measurement Accuracy & Precision.

TOPIC: Significant Figures in calculations AIM: How do we add, subtract, multiply and divide measurement in significant figures? DO NOW: ( 5.

CH. 2 - MEASUREMENT I. Using Measurements.

I. Using Measurements (p )

Convert to scientific notation

How do you determine where to round off your answers?

Objectives C-1.1 Apply established rules for significant digits, both in reading a scientific instrument and in calculating a derived quantity from measurement.

Which of these numbers has the most significant figures E 5

Measurement Day 1 – Sig Figs.

Aim: How do we determine the number of significant figures in a measurement? Warm Up What is the difference between the values of 3, 3.0, and 3.00.

Calculation with Significant Figures

Using Sig Figs in Calculations

Presentation transcript:

Sig Fig clicker worksheet practice

John counted out ten dollar bills. A.Exact B.Inexact (measured)

How many significant figures? SF

Which one has more significant figures? cm and cm

Enter the correct answer in clicker ml ml ml = Calculator value= ml Correct rounded value = ml

Enter the correct answer in clicker. 16 cm X 14 cm = Calculator value= 224 cm 2 Correct rounded value = 220 cm 2

Enter the correct answer in clicker m X m = Calculator value= m 2 Correct rounded value = 0.63 m 2

There are 12 eggs to a dozen. A.Exact B.Inexact (measured)

How many significant figures? SF

Which one has more significant figures? 542,000 kg and kg

Enter the correct answer in clicker  C – 5.5  C = Calculator value= 5.46  C Correct rounded value = 5.5  C

Enter the correct answer in clicker cm X 14.0 cm = Calculator value= 224 cm 2 Correct rounded value = 224 cm 2

The baker measured 2 pounds of butter and a quart of flour. A.Exact B.Inexact (measured)

How many significant figures? 2,850 3 SF

Which one has more significant figures? g and g

Enter the correct answer in clicker ml – ml = Calculator value= ml Correct rounded value = 5.41 ml

Enter the correct answer in clicker m ÷ 21 s = Calculator value= m/s Correct rounded value = 0.76 m/s

Each box of chocolate contains 16 candies. A.Exact B.Inexact (measured)

How many significant figures? 28,500 3 SF

Enter the correct answer in clicker ml ml = Calculator value= ml Correct rounded value = ml

Enter the correct answer in clicker. 8.6 m X 9 m = Calculator value= 77.4 m 2 Correct rounded value = 80 m 2

Enter the correct answer in clicker m ÷ s = Calculator value= m/s Correct rounded value = m/s

The room is 13 feet by 18 feet. A.Exact B.Inexact (measured)

How many significant figures? 28, SF

Enter the correct answer in clicker kg kg kg = Calculator value= kg Correct rounded value = kg

Enter the correct answer in clicker. 2 g ÷ 3 ml = Calculator value= g/ml Correct rounded value = 0.7 g/ml

Please let me have 5 meters of that ribbon. A.Exact B.Inexact (measured)

How many significant figures? SF

Enter the correct answer in clicker g g g = Calculator value= g Correct rounded value = g

Enter the correct answer in clicker. 8.6 m X 9.0 m = Calculator value= 77.4 m 2 Correct rounded value = 77 m 2

The temperature is 23.4  C. A.Exact B.Inexact (measured)

How many significant figures? SF

Which one has more significant figures? 1282 g and 1,280 g

Enter the correct answer in clicker. 860 m X 90 m = Calculator value= 77,400 m 2 Correct rounded value = 80,000 m 2

Enter the correct answer in clicker g ÷ 3.0 ml = Calculator value= g/ml Correct rounded value = 0.67 g/ml

Determine the number of significant digits in the following numbers: ,000 3 SF 2 SF 4 SF 5 SF 2 SF

Round off the following numbers to three significant digits:

Round of the following numbers to four significant digits

Perform the indicated operation and express your answer to the proper number of significant digits: – x /25.5

Perform the indicated operation and express your answer to the proper number of significant digits: x /5.183