First Term Examination Questions Chemistry SS 1 First Term Lesson Notes Week 12
Week 12 – First Term Examination for SS 1 Chemistry
Topics Covered: Introduction to Chemistry, Particulate Nature of Matter, Symbols, Formulae and Equations, Chemical Combinations, and States of Matter
Exam Instructions for Teachers and Students
For Teachers:
- Supervise the exam room with integrity and fairness.
- Ensure all students are seated according to the seating plan.
- Prevent any form of communication among students during the exam.
- Be vigilant and observant to identify any signs of malpractice.
- Collect all exam materials (scratch paper, extra sheets) at the end of the exam.
For Students:
- Arrive on time and bring all necessary materials (pen, pencil, eraser, etc.).
- Do not bring unauthorized materials (phones, notes, textbooks) into the exam room.
- Answer each question on your own; avoid copying or discussing answers with others.
- Respect the rules and follow all instructions given by your teacher.
- Cheating is not tolerated and may result in disqualification.
Part A: Objective Questions (30 Fill-in-the-Blank with Options)
- The __________ is the smallest particle of an element.
a) atom
b) molecule
c) electron
d) neutron - An atom’s atomic number represents the number of __________ it has.
a) neutrons
b) protons
c) electrons
d) atoms - __________ are particles with no charge found in the atom’s nucleus.
a) Neutrons
b) Electrons
c) Protons
d) Ions - The __________ table organizes all known elements.
a) atomic
b) element
c) periodic
d) molecular - In ionic bonds, electrons are __________.
a) shared
b) transferred
c) split
d) combined - Atoms of the same element with different masses are called __________.
a) ions
b) isotopes
c) molecules
d) compounds - The simplest formula of a compound is known as the __________ formula.
a) empirical
b) molecular
c) structural
d) ionic - The __________ number is the sum of protons and neutrons in an atom.
a) mass
b) atomic
c) energy
d) electron - Protons have a __________ charge.
a) positive
b) negative
c) neutral
d) varying - Solid matter has a __________ shape and volume.
a) fixed
b) changing
c) undefined
d) fluid - The chemical formula for water is __________.
a) H2
b) O2
c) H2O
d) HO2 - __________ bonds are formed by sharing electrons.
a) Ionic
b) Covalent
c) Metallic
d) Van der Waals - __________ is when a solid turns directly into a gas.
a) Melting
b) Sublimation
c) Condensation
d) Freezing - The __________ theory explains the motion of particles in matter.
a) kinetic
b) atomic
c) molecular
d) periodic - Atoms with the same number of protons but different numbers of neutrons are called __________.
a) ions
b) isotopes
c) molecules
d) compounds - Water changes from liquid to gas during __________.
a) freezing
b) evaporation
c) melting
d) sublimation - __________ is known as the father of modern chemistry.
a) Dalton
b) Mendeleev
c) Lavoisier
d) Thomson - __________ is the smallest unit of a compound.
a) Atom
b) Molecule
c) Proton
d) Neutron - In __________, particles are tightly packed together.
a) gas
b) liquid
c) solid
d) plasma - The __________ formula shows the actual number of atoms in a compound.
a) empirical
b) molecular
c) atomic
d) structural - The __________ table arranges elements by increasing atomic number.
a) kinetic
b) periodic
c) compound
d) isotope - A __________ is formed when two or more atoms bond together.
a) molecule
b) isotope
c) proton
d) mixture - __________ bonds involve electron sharing.
a) Covalent
b) Ionic
c) Metallic
d) Intermolecular - Atomic __________ refers to the number of protons in the nucleus.
a) weight
b) number
c) mass
d) radius - Metals are known to __________ electricity.
a) conduct
b) reflect
c) resist
d) absorb - The __________ law states that matter cannot be created or destroyed.
a) kinetic
b) conservation
c) periodic
d) atomic - Elements in the same __________ have similar properties.
a) period
b) group
c) state
d) isotope - A __________ is a substance with a fixed composition.
a) compound
b) mixture
c) element
d) particle - Neutrons have __________ charge.
a) a positive
b) a negative
c) no
d) a variable - Electrons orbit the __________ of the atom.
a) nucleus
b) shell
c) molecule
d) neutron
Part B: Theory Questions (Short Answer)
- Define atomic number.
- What is a proton?
- Explain covalent bonding.
- What does the kinetic theory describe?
- Define an atom.
- What is the difference between a compound and a mixture?
- Name the three states of matter.
- What is the law of conservation of mass?
- Describe an isotope.
- What is the periodic table?
- How does an ionic bond form?
- State Dalton’s atomic theory.
- Define sublimation.
- Explain the term “atomic mass.”
- What is a molecule?
- Define empirical formula.
- Explain why water is a compound.
- What are isotopes?
- Describe atomic structure.
- Define ion.
- Explain the term “period” in the periodic table.
- What is a chemical symbol?
- Describe Van der Waals forces.
- Define relative atomic mass.
- What is a metallic bond?
- State the difference between solids and liquids.
- Describe the electron arrangement in atoms.
- What is atomic weight?
- Explain the difference between physical and chemical changes.
- Define atomic radius.
Part C: True or False Questions
- Electrons are found in the nucleus. (True/False)
- Atoms are the basic units of matter. (True/False)
- Ionic bonds involve sharing electrons. (True/False)
- Solids have a definite shape. (True/False)
- Water can exist in three states of matter. (True/False)
- Neutrons have no charge. (True/False)
- Protons are negatively charged. (True/False)
- Molecules are formed by chemical bonds. (True/False)
- The periodic table arranges elements by atomic mass. (True/False)
- Covalent bonds involve sharing electrons. (True/False)
- Isotopes have the same atomic number but different masses. (True/False)
- The atomic number is the total of protons and neutrons. (True/False)
- Atoms in a gas are tightly packed. (True/False)
- Van der Waals forces are strong bonds. (True/False)
- Chemical symbols represent elements. (True/False)
- Evaporation is a change from gas to liquid. (True/False)
- Atomic mass includes protons and neutrons. (True/False)
- The law of conservation of mass states matter cannot be destroyed. (True/False)
- Mixtures have a fixed composition. (True/False)
- Metals generally conduct electricity. (True/False)
- A molecule is the smallest unit of a compound. (True/False)
- Hydrogen bonds are strong bonds. (True/False)
- Protons are found in the atom’s nucleus. (True/False)
- Ionic bonds are strong bonds. (True/False)
- Chemical equations show element symbols and formulas. (True/False)
- Empirical formulas show exact numbers of atoms. (True/False)
- Physical changes are usually reversible. (True/False)
- A solid has no fixed volume. (True/False)
- Metallic bonds are formed between metals. (True/False)
- The kinetic theory explains the behavior of particles. (True/False)
Part D: Fill-in-the-Blank Questions (No Options)
- Atoms are the smallest units of __________.
- The __________ of an element shows its number of protons.
- __________ bonds are formed by sharing electrons.
- A solid has a __________ shape.
- __________ is the process where liquid changes to gas.
- __________ have no electrical charge.
- A mixture has a __________ composition.
- The __________ table organizes elements by atomic number.
- An isotope has a different __________ number.
- Protons are found in the atom’s __________.
- The __________ theory describes particle movement.
- __________ is the smallest unit of a compound.
- Atomic __________ refers to the total number of protons and neutrons.
- In an ionic bond, electrons are __________.
- The chemical formula for water is __________.
- __________ are substances with fixed compositions.
- An __________ is formed by combining atoms.
- Van der Waals forces are __________ bonds.
- Solids are tightly __________ together.
- A molecule of water has __________ hydrogen atoms.
- Atomic mass includes protons and __________.
- __________ are bonds between metal atoms.
- The atomic __________ shows the number of protons.
- Matter cannot be created or __________.
- Chemical symbols represent __________.
- An ion is an atom with a __________.
- Chemical equations are balanced using __________.
- Empirical formulas show __________ ratios.
- __________ bonds involve giving or taking electrons.
- __________ changes are usually irreversible.
Good luck, and remember to work honestly and carefully!
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