Layers of the Earth
This is the outermost layer of the Earth where we live, and it is made of solid rock.
What is the Crust?
This type of change occurs when an ice cube melts into liquid water, but the substance remains water.
What is a Physical Change?
This is the smallest unit of an element that maintains the properties of that element.
What is an Atom?
Making up the majority of the Periodic Table, these elements are typically shiny, conduct heat well, and are "malleable."
What are Metals?
In the metric system, you would multiply a measurement in meters by this number to convert it into centimeters.
What is 100?
This layer is the thickest part of the Earth’s interior and is located between the crust and the outer core.
What is the Mantle?
This common chemical change occurs when iron reacts with oxygen and moisture to form a reddish-brown coating.
What is Rusting (or Oxidation)?
Elements in the Periodic Table are arranged in order of this number, which represents the amount of protons in the nucleus.
What is the Atomic Number?
These elements are located to the right of the "stair-step" line and are generally poor conductors of heat and electricity.
What are Nonmetals?
If a liquid measurement is 2,000 milliliters, it is equal to this many liters.
What is 2?
Unlike the solid inner core, this layer is composed of liquid iron and nickel.
What is the Outer Core?
Shredding paper, chopping wood, and breaking glass are all examples of this type of change because no new substance is formed.
What is a Physical Change?
These are the vertical columns on the Periodic Table, where elements often share similar chemical properties.
What are Groups (or Families)?
This unique group of elements sits directly on the "stair-step" line and shares properties of both metals and nonmetals.
What are Metalloids?
To convert kilometers to meters, you must move the decimal point this many places to the right.
What is three? (Since 1 km = 1,000 m)
Scientists believe the Earth’s magnetic field is generated by the movement of liquid metal in this specific layer.
What is the Outer Core?
When baking soda and vinegar are mixed, the resulting "fizzing" or bubbles are a sign that this type of change has occurred.
What is a Chemical Change?
Located on the far right of the table, this group of stable elements (like Neon and Helium) rarely reacts with others.
What are the Noble Gases?
Metalloids like Silicon are often called "this" because they can conduct electricity only under certain conditions, making them vital for computer chips.
What are Semiconductors?
In the U.S. Customary system, there are this many cups in a single quart.
What is 4?
Under extreme pressure, this solid, innermost layer of the Earth reaches temperatures as hot as the surface of the sun.
What is the Inner Core?
This specific chemical process occurs when a substance reacts rapidly with oxygen to release heat and light, commonly known as burning.
What is Combustion?
This is the most abundant element in the universe and occupies the very first spot on the Periodic Table.
What is Hydrogen?
With the exception of Mercury, which is a liquid, almost all elements in this category are solids at room temperature.
What are Metals?
This prefix, used in measurements like "milligram" or "millimeter," represents one-thousandth (1/1,000) of a base unit.
What is Milli-?