What is CHEMISTRY? The study of _______________________
the scientific study of ELEMENTS and the MOLECULES they make with other elements.
What is an element?
An element is a certain kind of ATOM. A substance that is made up of only 1 type of atom.
What is an atom?
An atom is the smallest particle of any substance.
Atoms are made from even tinier pieces known as subatomic particles. What are these 3 things called?
Protons, neutrons and electrons.
What is the name of the ordered arrangement of the chemical elements into rows and columns?
The Periodic Table
Who invented the Periodic Table of Elements?
In 1869, Russian chemist Dmitri Mendeleev created the framework that became the modern periodic table.
What is the atomic number of Hydrogen?
Hydogen's atomic number is 1
A group of different types of elements stuck together is called a ________________
A group of different types of elements stuck together is called a MOLECULE.
when molecules meet with other molecules they usually change each other. This is known as a ______________________.
when molecules meet with other molecules they usually change each other. This is known as a CHEMICAL REACTION.
When you mix baking soda and vinegar you get a chemical reaction. What new substance is formed (the bubbles)?
Carbon dioxide
Name one indication that a chemical reaction has occurred.
color change, temperature change, new substance is formed
What is phenolphthalein?
Phenolphthalein is a chemical compound which turns pink/red in an alkaline and clear in an acid. It is used in titrations.
Is ammonia an acid or a base?
Base
Is vinegar an acid or a base?
Acid
