Chemistry Definitions Beginner Quiz 5
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Beginner Quiz 5
1. What is a homogeneous mixture?
A mixture that is the same throughout
A mixture with visible parts
A type of element
2. What is a heterogeneous mixture?
A mixture with visibly different parts
A mixture that is the same throughout
A type of atom
3. What is not an atom?
A container used to hold chemicals
The smallest unit of an element that still has that element’s properties
A single particle of a pure element
4. Which of the following is not a molecule?
A large block of pure iron metal
A particle made of two oxygen atoms joined together (O₂)
A particle made of one carbon atom and two oxygen atoms (CO₂)
5. Which of the following is not an element?
A mixture of liquids and gases
A pure substance made of only one kind of atom
An example like oxygen or gold
6. Which of the following is not a compound?
A single type of metal in solid form
A substance made of two or more different elements chemically joined
A substance like water, made from hydrogen and oxygen
7. Which of the following is not part of the nucleus of an atom?
The electrons that move around the atom
The protons in the center of the atom
The neutrons in the center of the atom
8. What is the atomic number of an element?
The number of protons in the nucleus of its atoms
The total number of protons and neutrons added together
The number of electrons in every possible energy level
9. Which of the following is not a chemical reaction?
A simple change from solid to liquid with no new substance
Iron rusting to form a new substance
Vinegar reacting with baking soda to make bubbles
10. What is an acid?
A substance that tastes sour and can donate hydrogen ions in solution
A slippery substance that feels soapy and is always neutral
A gas that has no effect on other substances
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