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Chemistry

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

The Particle Model of Matter

Subtopic

The Particle Model of Matter under Chemistry for Grade 8 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Why is the density of a gas much lower than the density of a solid of the same substance?

    A.

    Gas particles are lighter than solid particles

    B.

    Gas particles are further apart

    C.

    Gas particles have no volume

    D.

    Gas particles are smaller

  2. 2.

    Which of the following is true about the mass of a gas?

    A.

    Gas has no mass

    B.

    Gas particles have mass

    C.

    Gas mass changes based on the container

    D.

    Gas mass is always zero

  3. 3.

    According to the particle theory, what is between the particles of a substance?

    A.

    Air

    B.

    Water

    C.

    Empty space

    D.

    Small fibers

Download the worksheet for Chemistry - The Particle Model of Matter to practice offline. It includes additional chapter-level practice questions.

Atomic Structure (Protons, Neutrons, Electrons)

Subtopic

Atomic Structure (Protons, Neutrons, Electrons) under Chemistry for Grade 8 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which particle is NOT found in the nucleus of an atom?

    A.

    Proton

    B.

    Neutron

    C.

    Electron

    D.

    Nucleon

  2. 2.

    Which two subatomic particles have almost the same mass?

    A.

    Proton and Electron

    B.

    Neutron and Electron

    C.

    Proton and Neutron

    D.

    None of them

  3. 3.

    What is the atomic number of an element that has 2020 protons, 2020 neutrons, and 2020 electrons?

    A.

    4040

    B.

    2020

    C.

    6060

    D.

    1010

Download the worksheet for Chemistry - Atomic Structure (Protons, Neutrons, Electrons) to practice offline. It includes additional chapter-level practice questions.

Elements, Compounds, and Mixtures

Subtopic

Elements, Compounds, and Mixtures under Chemistry for Grade 8 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of these is the symbol for the element Cobalt?

    A.

    Co

    B.

    C

    C.

    Cb

    D.

    Ct

  2. 2.

    What is the chemical symbol for Platinum?

    A.

    P

    B.

    Pt

    C.

    Pl

    D.

    Pa

  3. 3.

    Which symbol represents the element Iodine?

    A.

    Id

    B.

    Io

    C.

    I

    D.

    In

Download the worksheet for Chemistry - Elements, Compounds, and Mixtures to practice offline. It includes additional chapter-level practice questions.

The Periodic Table Trends

Subtopic

The Periodic Table Trends under Chemistry for Grade 8 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which element has the chemical symbol HgHg?

    A.

    Hydrogen

    B.

    Helium

    C.

    Mercury

    D.

    Silver

  2. 2.

    How many electrons are in the outer shell of an element in Group 1?

    A.

    1

    B.

    2

    C.

    7

    D.

    8

  3. 3.

    Elements in the same group of the Periodic Table generally have:

    A.

    The same number of protons

    B.

    The same mass number

    C.

    Similar chemical properties

    D.

    The same number of neutrons

Download the worksheet for Chemistry - The Periodic Table Trends to practice offline. It includes additional chapter-level practice questions.

Chemical Reactions (Exothermic and Endothermic)

Subtopic

Chemical Reactions (Exothermic and Endothermic) under Chemistry for Grade 8 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following describes a reaction where the surrounding temperature rises?

    A.

    Exothermic

    B.

    Endothermic

    C.

    Insulated

    D.

    Isothermic

  2. 2.

    Bond making is a process that:

    A.

    Absorbs energy

    B.

    Releases energy

    C.

    Requires a vacuum

    D.

    Only happens in gases

  3. 3.

    What happens to the temperature of the beaker when you mix barium hydroxide and ammonium chloride (a strong endothermic reaction)?

    A.

    It increases rapidly

    B.

    It stays the same

    C.

    It decreases significantly

    D.

    The beaker melts

Download the worksheet for Chemistry - Chemical Reactions (Exothermic and Endothermic) to practice offline. It includes additional chapter-level practice questions.

Acids, Alkalis, and the pH Scale

Subtopic

Acids, Alkalis, and the pH Scale under Chemistry for Grade 8 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    A wasp sting is slightly alkaline. Which of these household items would be best to treat it?

    A.

    Bleach

    B.

    Baking soda

    C.

    Vinegar

    D.

    Soap

  2. 2.

    If you mix exactly the right amounts of a strong acid and a strong alkali, what will the final pH be?

    A.

    0

    B.

    7

    C.

    14

    D.

    10

  3. 3.

    Which of these is the chemical formula for nitric acid?

    A.

    HClHCl

    B.

    HNO3HNO_3

    C.

    NaOHNaOH

    D.

    H2OH_2O

Download the worksheet for Chemistry - Acids, Alkalis, and the pH Scale to practice offline. It includes additional chapter-level practice questions.

Chemistry - IGCSE Grade 8 Science Notes & Revision | Krit.club