Question 1
Question
Select all of the metals in this list.
Answer
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hydrogen
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mercury
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iron
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gold
Question 2
Question
Which of these is an alloy?
Answer
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iron
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hydrogen
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carbon dioxide
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steel
Question 3
Question
Most elements are metals.
Question 4
Question
The Periodic Table of Elements is organized by [blank_start]chemical properties and atomic numbers.[blank_end]
Answer
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chemical properties and atomic numbers.
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physical and chemical properties.
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number of protons and neutrons.
Question 5
Question
[blank_start]Mixtures[blank_end] are two or more substances together.
Answer
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Mixtures
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Solutions
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Compounds
Question 6
Question
Select all of the compounds listed below.
Answer
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Carbon Dioxide
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Water
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Sugar
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Salt
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O2
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H2
Question 7
Question
Which of these is a molecule of a compound?
Question 8
Question
How many atoms are in this chemical formula: 2NaHCO3?
Question 9
Question
Solutions are mixtures.
Question 10
Question
Sugar is an element.
Question 11
Question
Which of these statements is true for all metals?
Question 12
Question
Mark all choices that state characteristics of metals. (Does not have to be true for all metals).
Question 13
Question
When you add [blank_start]oxygen[blank_end] to iron, you get a chemical reaction which gives the product, rust.
Question 14
Question
Another name for rust is iron oxide.
Question 15
Question
Mark all that would be evidence of a chemical reaction.
Question 16
Question
Mark all that would be evidence of a saturated solution.
Answer
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precipitate forms
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solute on the bottom
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temperature change
Question 17
Question
Which of these would supersaturate a solution?
Question 18
Question
To separate a salt solution, you must use [blank_start]evaporation[blank_end].
Question 19
Question
The smallest amount of sugar you can have is a/an
Question 20
Question
The most abundant element and the most abundant compound in the human body are