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Science worksheet 123, Schemes and Mind Maps of Earth science

Earth science

Practice questions to further develop your knowledge

Typology: Schemes and Mind Maps

2021/2022

Uploaded on 02/17/2025

andreea-timotin
andreea-timotin 🇬🇧

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Year 9 End of year exam
Chemistry revision
1. Complete the table to show the relative charges and masses of the particles in an
atom:
Particle Mass Charge
Proton +1
Neutron 1
1/2000 -1
2. Complete the table to show the number of protons, neutrons and electrons in and
atom of each element.
Element Protons Neutrons Electrons
Nitrogen 7 7
Cobalt 27
Iodine 53
3. Which of these is the definition of a compound?
a. Atoms of the same element chemically bonded together
b. Atoms of different elements chemically bonded together
c. Atoms of different elements mixed together, with no chemical bond
4. Which of these diagrams shows a mixture?
5. Name the separation technique shown in each diagram:
6. Who proposed the Plum Pudding model of the atom?
a. John Dalton
b. JJ Thompson
c. Ernst Rutherford
d. James Chadwick
[3]
[5]
[1]
[1]
[1]
[4]
[A] [B] [C]
pf3
pf4

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Year 9 End of year exam

Chemistry revision

  1. Complete the table to show the relative charges and masses of the particles in an atom: Particle Mass Charge Proton + Neutron 1 1/2000 -
  2. Complete the table to show the number of protons, neutrons and electrons in and atom of each element. Element Protons Neutrons Electrons Nitrogen 7 7 Cobalt 27 Iodine 53
  3. Which of these is the definition of a compound? a. Atoms of the same element chemically bonded together b. Atoms of different elements chemically bonded together c. Atoms of different elements mixed together, with no chemical bond
  4. Which of these diagrams shows a mixture?
  5. Name the separation technique shown in each diagram:
  6. Who proposed the Plum Pudding model of the atom? a. John Dalton b. JJ Thompson c. Ernst Rutherford d. James Chadwick [3] [5] [1] [1] [1] [4]

[A] [B] [C]

  1. Who conducted the α-particle scattering experiment? a. John Dalton b. JJ Thompson c. Ernst Rutherford d. James Chadwick
  2. Who discovered neutrons? a. John Dalton b. JJ Thompson c. Ernst Rutherford d. James Chadwick
  3. What is the name given to each section of the periodic table?
  4. What happens to the reactivity of atoms in group 1 as you go down the table? a. The reactivity increases b. The reactivity decreases c. The reactivity does not change
  5. Complete the gaps in the sentences to explain the trends in group 1 reactivity: As you go down group 1 of the periodic table, the reactivity ___________________. This is because the outer electron is __________________ from the nucleus. The completed electron shells act as a ___________________ and weaken the _________________ force between the nucleus and the outer electron. This means the outer electron is ______ more easily.
  6. What happens to the reactivity of atoms in group 7 as you go down the table? a. The reactivity increases b. The reactivity decreases c. The reactivity does not change
  7. Complete the gaps in the sentences to explain the trends in group 7 reactivity: As you go down group 7 of the periodic table, the reactivity ___________________. This is because the outer electron is __________________ from the nucleus. The completed electron [1] [1] [4] [1] [5] [1] [5]

a. Always b. Never c. Only when solid d. Only when liquid or aqueous

  1. What type of elements form covalent bonds? a. Metals only b. Non-metals only c. Metals and non-metals
  2. In a covalent bond, the electrons are: a. Transferred b. Shared c. Delocalised
  3. Complete the dot and cross diagram to show the covalent bonding in a molecule of water:
  4. Complete the sentences to describe the different kinds of giant covalent substances a. Graphite and diamond are both made of __________________________ b. In diamond, carbon forms ___________ covalent bonds c. Covalent bonds are very ____________ so the melting point of diamond is
    d. In graphite, carbon forms ___________ covalent bonds e. In graphite, one electron is ____________ which allows graphite to conduct
    f. ______________________ is a giant covalent substance made of oxygen and silicone, which has a very _____________ melting point due to its strong ____________ bonds [1] [1] [1] [2] [10]

FOLD THE SHEET IN HALF AND GLUE HERE