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The radius of a copper (Cu) atom is roughly $1.3 \times$ $10^{-10} \mathrm{m} .$ How many times can you divide evenly a piece of 10 -cm copper wire until it is reduced to two separate copper atoms? (Assume there are appropriate tools for this procedure and that copper atoms are lined up in a straight line, in contact with each other. Round off your answer to an integer.)

$x=29.5$

Chemistry 101

Chapter 1

Chemistry: The Study of Change

Intro to Chemistry

University of Kentucky

Brown University

University of Toronto

Lectures

02:29

Chemistry is the science of matter, especially its chemical reactions, but also its composition, structure and properties. Chemistry deals with atoms and their interactions with other atoms, and particularly with the properties of chemical bonds. Chemistry also involves understanding the properties and interactions of individual atoms and molecules for use in larger-scale applications.

04:42

In chemistry and physics, matter is any substance that has mass and takes up space by having volume. All everyday objects that can be touched are ultimately composed of atoms, which are made up of interacting subatomic particles, and in everyday as well as scientific usage, "matter" generally includes atoms and anything made up of them, and any particles and objects that act as if they have both rest mass and volume. However it does not include massless particles such as photons, or other energy phenomena or waves such as light or sound. Matter exists in various states (known as phases) that are defined by various physical properties, such as state of matter, phase, shape, and density. The Standard Model of particle physics and the general theory of relativity describe fundamental particles and the fundamental forces acting between them that control the structure and dynamics of matter.

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figure out how many times you can divide 10 centimeter copper wire in half before equals the, uh distance or the diameter of a copper. Adam, we'll first convert our centimeters into meters. And when we have meters, we'll use we need meters because, uh, diameter of a copper. Adam was given to us in meters. So then will take 0.1 meters. Divide it by two. If I didn't have a certain number of times until it equals the diameter of copper, Adam, and then carry out the math. Remember to take the log of both sides in order to get rid of the exponents or to bring down the exponents, and we got 29.5. So if we divide it 30 times, then were less than the diameter, so we could divide it only 29 times.

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