Atoms and Elements
What is the basic building block of matter
Atom
What table organizes all known element and their properties?
Periodic Table
What did Mendeleev create to organize elements based on their properties?
The Periodic Table of Elements
What is matter made of?
Atoms and Elements
Who were the scientists who developed the scanning tunneling microscope?
Rohrer and Binning
What do we call a pure substance made of one type of atom?
Element
Who is the scientist known for creating the first version of the periodic table?
Mendeleev
Who is known for developing the concept of triads to classify elements?
Döbereiner
Can you name the three states of matter?
Solid, Liquid, and Gas
What is the significance of the scanning tunneling microscope in science?
It allows scientists to visualize individual atoms
What is the term for a substance formed when two or more different atoms bond together?
Compound
What is the one or two letter abbreviation used to represent an element?
Chemical Symbol
Mendeleev
What happens to matter when it gets hot?
It can change states, often becoming a gas
What is the average mass of one proton or neutron, measured in daltons?
Roughly 1 dalton
What is the unit used to measure atomic scale distance, like the size of an atom?
Picometer
Who proposed a way to arrange elements by increasing atomic mass before Mendeleev?
John Newlands
Name a different scientist who contributed to the development of the periodic table
John Newlands
What is a physical change?
A change that does NOT alter the substance's chemical composition
What is the relationship between atomic mass and the periodic table>
Elements are arranged by increasing atomic mass
What is the average mass of an atom, often expressed in daltons?
Atomic Mass
What is the name of the device that allowed scientists to see individual atoms, developed by Rohrer and Binning?
Scanning Tunneling Microscope
How have scientists like Dmitri Mendeleev and John Newlands influenced our understanding of elements?
By organizing elements based on their properties and atomic mass
How does matter behave in a chemical reaction?
Matter is conserved; the total mass remains the same.
How did Mendeleev's periodic table differ from the modern periodic table?
Mendeleev arranged elements by atomic mass, while the modern table is arranged by atomic number