Elements
Which is NOT a physical or chemical change? Crushing, Weighing, Melting, Burning, Boiling
What is Weighing?
The chemical formula for water is H2O. How many different elements are in this molecule?
What is 2? (Hydrogen and Oxygen)
Matter is anything that has mass and _________________?
What is volume? (or "takes up space"?)
A category of elements on the periodic table. These element tend to be shiny and conduct heat and electric current.
What is a metal?
The chemical formula for water is H2O. How many atoms are present in a single molecule of water?
What is 3? (2 hydrogen atoms + 1 oxygen atom)
The smallest particle of matter that still retains the characteristics and properties of the substance.
What is an atom?
A category of elements on the periodic table. These elements have properties of both metals and nonmetals.
What are metalloids?
This subatomic particle defines the element.
What is the proton?
The only way to break down a compound is through this
What is a chemical change?
A _____ is a mixture that appears to be a single substance but is composed of a solute dissolved in a solvent.
What is a solution?
The ability of matter to be hammered into a thin shape Ex: aluminum foil
What is malleable?
Elements are organized into horizontal rows on the perioidic table based on the number of electron shells in the electron cloud. These horizontal rows are called ______________.
What are periods?
Ozone is a molecule that has 3 oxygen atoms chemically bonded together. True or false: Ozone is a compound.
What is false?
________ are mixtures that contain particles large enough to settle out or be filtered and to block or scatter light.
What are suspensions?
A group of non-metals on the periodic table. These elements tend to be very stable, and the gases are used to produce colorful lighting.
What are noble gases?
Elements are organized into vertical groups on the periodic table based on having the same number of electrons in the outer electron shell. The sub-atomic particles in this outer shell are called ___________ ___________.
What are valence electrons?
Which of the following are compounds? Carbon Dioxide, Water, Table Salt, Steel
What is Carbon Dioxide, Water, and Table Salt?
___________ are mixtures that contain particles that are too small to settle out or be filtered but are large enough to scatter light.
What are colloids?
Matter cannot be created or destroyed, it merely changes form is known as
What is The Law of Conservation of Matter?
This non-metal is very reactive because it has only one electron.
What is Hydrogen?