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# Billons to Billionths PowerPoint PPT Presentation

Billons to Billionths. Presenter: Carrie Persing 6-12 Math Dept. Chair MathScience Innovation Center. “ Nanoscience and technology will change the nature of almost every human-made object in the 21 st Century.” M.C. Roco , R.S. Williams, & P.Alvisatos , 1999.

Billons to Billionths

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## Billons to Billionths

Presenter: Carrie Persing6-12 Math Dept. ChairMathScience Innovation Center

“Nanoscience and technology will change the nature of almost every human-made object in the 21st Century.”M.C. Roco, R.S. Williams, & P.Alvisatos, 1999

### What is a nanometer and why is size and scale important ?

• Nano = dwarf in Greek

• It is one billionth of a meter (1 x 10-9)

• Properties of materials change at the nano level

• a. melting point b. fluorescence c. conductivity d. chemical reactivity

### DESCRIBE A BILLION

• A million seconds is 12 days

A billion seconds is 31 years

• A million hours ago it was 1896

A billion hours ago man did not

exist.

• One red blood cell can deliver one billion molecules of oxygen.

• There are about 6.2 billion people in the world.

### How many grains of salt can fit in a gallon jug?

1,000 grains

1 Pinch =

1,000,000 grains

1 Cup =

1 Jug =

16,000,000 grains

### How big would a container have to be to fit one billion grains?

Fox Elementary School is selling raffle tickets so you buy one ticket. The student tells you that you now have a one in ten chance of winning a prize.

### Cup 1 has a 10% solution or 1/10 solution

* 1 part per ten

What would be the concentration be for Cup 2?

1/10 of 1/10 = 1/100

1% solution or

1 part per hundred

### A Nanometer is a billionth of a meter

Well how small is that exactly?