The smallest piece of matter. It contains protons, neutrons, and electrons.
What is an atom?
100
An organized table of all the elements on Earth.
What is the periodic table?
100
A metal can be hammered into sheets and shapes.
What is malleability?
100
Two or more elements combine during this to make a compound.
What is a chemical reaction?
100
When two elements or substances combine to form a mixture, this DOES NOT occur.
What is a chemical reaction?
200
These properties can be seen or measured. Color, hardness, and luster are examples of these kind or properties.
What are physical properties?
200
This substance is made up of only one kind of atom. It con not be broken down into simpler parts.
What is an element?
200
Metals can be stretched into wire.
What is ductility?
200
Carbon, hydrogen, and oxygen combine to form this sweet compound.
What is sugar?
200
One way to separate slat and water from a salt water mixture is through the this process.
What is evaporation?
300
The number of protons in the nucleus of an atom.
What is the atomic number of an element?
300
Looking at the periodic table, all the elements along the right side are non reactive types of these.
What is a gas or noble gas?
300
All metals are conductors of these two things.
What is heat and electricity?
300
H₂O and CO₂ are examples of chemical ___________.
What is a formula?
300
This is a process that can be used to separate larger particles like sand or dirt from water.
What is a filter or filtration?
400
The smallest part of a substance made of 2 or more atoms.
What is a molecule?
400
As you move down the periodic table and move to the left side, the elements become more ______________.
What is reactive?
400
Some metals combine with other metals and create these substances and are often more useful than the metals that make them up.
What is an alloy?
400
These are special compounds made from a metal and a non metal. Many of them are unsafe for us to touch.
What is a salt?
400
When two elements or substances are combined to form mixture, the two substances can be separated and DO NOT lose their original ___________.
What is a property?
500
Atoms are so small you would need one of these to see images of one.
What is an electron microscope?
500
Most of the periodic table is made up of these.
What is a metal?
500
Gold is not an alloy. It is an element. A person can figure this out by looking here.
What is the periodic table?
500
As salts are formed, their atoms line up in an organized uniformed way, creating these.
What is a crystal?
500
This is a special kind of mixture where the a substance is dissolved into another and will spread out evenly. An example of this kind of mixture is kool aid.