WorksheetsGRADE 10 CHEM QUIZ
Total questions: 25
Worksheet time: 50mins
The mass number of an atom is determined by the total number of:
Protons and electrons
Protons and neutrons
Neutrons and electrons
Valence electrons
Which of the following is a property of ionic compounds?
Low melting points
Conduct electricity when solid
Soluble in water
Form molecules
What is the correct formula for sodium carbonate?
NaCO₃
Na₂CO₃
Na₂C
NaC
Which element is in Group 2 and Period 3 of the periodic table?
Lithium
Beryllium
Magnesium
Calcium
A substance with a pH of 3 is classified as:
Strong acid
Weak acid
Neutral
Weak base
What type of reaction is: Mg + HCl → MgCl₂ + H₂?
Neutralization
Combustion
Displacement
Decomposition
Which of the following is a non-metal?
Iron (Fe)
Sulfur (S)
Sodium (Na)
Calcium (Ca)
The chemical symbol for the ion formed by oxygen is:
O⁺
O²⁻
O⁻
O²⁺
What is the electron arrangement for an atom of aluminum (atomic number 13)?
2,8,3
2,8,2
2,8,8
2,3
Isotopes of an element have the same number of:
Neutrons
Protons
Electrons
Nucleons
Define the term isotope and give an example.
Balance the equation: Fe + Cl₂ → FeCl₃.
Explain why carbon (atomic number 6) forms covalent bonds.
State two differences between metals and non-metals.
Draw the electron arrangement for a nitrogen atom (atomic number 7).
Describe how litmus paper changes color in acidic and basic solutions.
Calculate the number of protons, neutrons, and electrons in Na⁺.
Why do atoms form ions? Give an example.
Identify the type of bonding in methane (CH₄) and explain its properties.
Write the word equation for the reaction between sulfuric acid and potassium hydroxide.
Compare the properties of elements in Group 1 (alkali metals) and Group 17 (halogens).
Explain why atomic radius increases as you move down a group in the periodic table.
Describe the reaction of dilute hydrochloric acid with calcium carbonate. Include the word equation.
What is the role of an indicator in a titration?
Explain why diamond (a covalent substance) has a high melting point, while methane (CH₄) is a gas at room temperature.
