Vocabulary
Periodic Table
Atomic Structure
Elements
Surprise
100
Mendeleev created the first __________________, which organized the elements.
Periodic Table of Elements
100
What group do the noble gasses belong to on the periodic table of elements?
18
100
What is the charge of a proton?
Positive
100
Identify the atomic number.
10
100
Material engineers use the __________________of a material when making decisions about a product.
Life Cycle
200
__________________ contain two small particles in the nucleus, the proton and neutron.
Atoms
200
What groups do the transition metals belong to on the periodic table of elements?
Groups 3-12
200
What is the charge of an electron?
Negative
200
Identify the atomic mass number.
20.18
200
Between flammability and electrical conductivity, which one is a chemical property?
Flammability
300
When we tested a material’s electrical conductivity, we were testing the material’s __________________.
Physical Properties
300
What groups on the periodic table are most reactive?
Group 1 & 17
300
An atom contains three particles.
Protons, neutron & electrons
300
__________________ are substances that cannot be broken down into simpler substances by heating or causing to react with other chemicals.
Elements
300
What are metalloids?
Elements that have metal and non-metal characteristics. They also separate the metals and non-metals on the periodic table.
400
A __________________ is a type of solid matter used to make things.
Material
400
What group on the periodic table is the least reactive?
Group 18
400
Explain the structure of an atom.
Electrons are around the nucleus and the proton and electron are within the nucleus.
400
When elements react, they can form substances called __________________.
Compounds
400
What material, aluminum, copper or iron, would be best to make an electrical wire?
Copper
500
A __________________ describes how a material reacts with another substance, such as an acid or oxygen.
Chemical Properties
500
How is the periodic table of elements organized?
By atomic number
500
How do atoms combine to form molecules?
Atoms of an element combine with other atoms to create molecules
500
What is an isotope?
An element with more or less neutrons
500
Explain the relationship between an atom and a molecule.
Elements are made up of atoms. Those atoms of different elements come together to form a molecule.