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The liquid that passes through a filter is called the __________________.
The liquid that passes through the filter is called the FILTRATE.
When performing a filtration, what is the name of the substance you collect on the filter paper?
Residue
What is a precipitate in chemistry?
A precipitate is a solid that forms from a chemical or physical reaction when 2 or more solutions are combined.
Which measurement is more accurate, millimeters or meters?
millimeters
What is the name of the scientific equipment pictured here?
Erlenmeyer flask
Scientists, like chemists, must use the ______________ to measure and weigh so that they can share their findings with the rest of the world.
Scientists, like chemists, must use the metric system to measure and weigh so that they can share their findings with the rest of the world.
A person who studies and works with chemicals is known as a ___________.
A person who studies and works with chemicals is known as a chemist.
On the pH scale, which number represents neutrals?
On the pH scale, number 7 represents neutrals.
On the pH scale, which numbers represent bases?
On the pH scale, the numbers higher than 7 represent bases.
On the pH scale, which numbers represent acids?
Numbers less than 7 represent acids.
Is vinegar an acid or a base?
Acid
Is ammonia an acid or a base?
Base
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.
Name one indication that a chemical reaction has occurred.
color change, temperature change, new substance is formed
When you mix baking soda and vinegar you get a chemical reaction. What new substance is formed (the bubbles)?
Carbon dioxide
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.
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.
What is the atomic number of Hydrogen?
Hydogen's atomic number is 1
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 name of the ordered arrangement of the chemical elements into rows and columns?
The Periodic Table
Atoms are made from even tinier pieces known as subatomic particles. What are these 3 things called?
Protons, neutrons and electrons.
What is an atom?
An atom is the smallest particle of any substance.
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 CHEMISTRY? The study of _______________________
the scientific study of ELEMENTS and the MOLECULES they make with other elements.


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