Name:

Lesson 2 of Unit 1: What Are Metals?

Define (and Know)

Metal: ______

Nonmetal: ______

Malleable: ______

Alloy: ______

Metalloid: ______

Metals and Nonmetals

Being a good conductor of heat and electricity, like a metal, means that they can ______up quickly and electricity ______them easily. ______% of all the elements are metals. ______are found on the far right side of the periodic table and they don’t have the same properties as metals. Do you think metals ability to reflect light is a chemical property or a physical property? Circle one. Most metals are the colors ______and ______, with gold and ______being the most common metals that are not those colors. Metals can be easily shaped or formed. This is because metals are ______. Metals are also ductile, which means they can be pulled into thin strands without ______. Wow! You just read about four different ______properties of metals. Can you list them all here?

Properties of Metals

All elements in the same column of the periodic table are called ______and they are related and share similar physical properties. The ______and ______points of metals are also types of physical properties. You have learned that metals are good conductors of heat, this means they have a high ______(2 words). This is why we cook with metal pans and not oak pans, duh. Also, we learned metals are good conductors of electricity. This means they have a high ______. Some metals are better for this than others. The main metal used in wiring is ______due to its lower cost than other highly conductive metals. ______are materials that do not conduct electricity. We need a combo of these and quality metals to make the use of electricity safe for us. ______is also an important property of metals when thinking about building planes or construction beams. You wouldn’t want to try and take a flight in a plane made mostly of iron. Or would you???

Seeing Metal Atoms:

This is a crazy page with some really difficult ideas to get your heads around, but just try to gain the essentials. We know atoms are super-duper small. Most microscopes couldn’t come close to seeing these minute objects. Then an ______microscope was invented which allowed scientists to see the insides of cells. But they needed a microscope even more powerful. In the 1980s the STM, or ______, came into this world and allowed scientists to actually see individual atoms. They helped show how atoms in solids were arranged in ______patterns. Here’s the big kicker. The properties of any object depends on howits ______are joined together. Say that again. The property of all objects depends upon how its ATOMS are joined together. More to come. Look at the picture of the iron array. Iron is an extremely strong metal. Right? Does it make sense that its smallest array would be shaped like a cube? Then put with others, like building blocks.

In a few sentences tell us why!

Alloys and Metalloids:

We all have heard of steel. “You can’t hurt steel.” used to be a playground favorite in my day. But what is steel? Steel is an ______, or a solid solution made by combining metals or a metal and a nonmetal. Once this new solution is created, the properties of the new substance have ______. Bronze is an alloy made by combining copper and tin. List a few of the benefits you just read about when using bronze. ______. The reason we have stainless steel silverware is because the alloy will not rust and won’t ______with chemicals in food. ______are elements that have some of the properties of metals, and are sometime referred to as ______. Silicon is an example and is also called a ______because it does not conduct electricity as well as some other metals. It is for this reason they it is used a lot in computers.

Make a table below like the one on page 84. Next to each element, write its symbol from the periodic table and its atomic number.

Common Alloys

Name / Main Substances / Properties
Brass / copper (Cu #29), zinc (Zn #30) / Bright yellow and soft