Lesson T7.1.1
T7.1.1 Mendeleev and the Periodic Table Quiz: KS3 Chemistry, Unit 7
20 questions
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Lesson T7.1.1, Mendeleev and the Periodic Table: 20 multiple choice questions for the KS3 Chemistry (National Curriculum), Unit 7: The Periodic Table, written with Revision Ninja.
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The 20 questions
-
What main property was used by Mendeleev to order elements?
- Density
- Electron count
- Atomic number
- Atomic mass
-
Why did Mendeleev leave gaps in his early Periodic Table?
- Undiscovered elements
- Unknown compounds
- Radioactive isotopes
- Gaseous elements
-
Mendeleev left a gap in his periodic table for an element he called eka-silicon. Which element was later discovered to fill this gap?
- Germanium
- Scandium
- Phosphorus
- Titanium
-
Which tool did Mendeleev use to arrange the known elements?
- Scrolls
- Computer models
- Information cards
- Wooden blocks
-
What did Mendeleev notice about element properties when ordered by mass?
- They decreased steadily
- They increased randomly
- They repeated regularly
- They stayed constant
-
How are elements ordered in the modern Periodic Table?
- Atomic number
- Reactogenicity
- Density
- Atomic mass
-
What does the atomic number of an element represent?
- Electron shell total
- Neutron count
- Nucleon sum
- Proton count
-
Why did Mendeleev swap tellurium and iodine in his table?
- To follow atomic mass
- Alphabetical order
- Random placement
- Matching group properties
-
What major success did Mendeleev's table achieve for future science?
- Isolating noble gases
- Discovering electrons
- Proving atomic theory
- Predicting unknown elements
-
Where do elements with similar chemical properties appear in the table?
- Opposite ends
- Diagonal corners
- Same column
- Same row
-
Which information did Mendeleev rely on most when placing elements?
- Electrical conductivity
- Flame colours
- Chemical properties
- Melting points only
-
Why was Mendeleev's periodic table considered such an important breakthrough?
- It sorted masses
- It listed atoms
- It used symbols
- It revealed patterns
-
Which periodic table classification shares similar chemical properties?
- Row
- Group
- Period
- Block
-
What term describes the repeating pattern of properties in the table?
- Periodicity
- Isotopy
- Valency
- Radioactivity
-
What was the main purpose of gaps in Mendeleev's table?
- Predicting missing elements
- Marking radioactive decay
- Showing unstable atoms
- Indicating compound states
-
Mendeleev predicted an element he called eka-aluminium. Which element was it later found to be?
- Scandium
- Boron
- Gallium
- Titanium
-
Mendeleev predicted an element he called eka-boron. Which element was it later found to be?
- Scandium
- Gallium
- Germanium
- Yttrium
-
Which scientist's predictions of undiscovered elements were later confirmed by discovery?
- Rutherford
- Faraday
- Mendeleev
- Dalton
-
Which problem does ordering by atomic number solve in the table?
- Hydrogen and helium
- Tellurium and iodine
- Sodium and potassium
- Fluorine and chlorine
-
What is the name for the regular repeat of properties seen across the Periodic Table?
- Periodicity
- Isomerism
- Ionisation
- Oxidation
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