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WorksheetsCHEMTEST : CHAPTER 2 FORM 4 (MATTER & THE ATOMIC STRUCTURE)
Total questions: 20
Worksheet time: 15mins
What is matter?
Matter is anything that has energy and occupies space
Matter is anything that has mass and occupies space
Matter is anything that has volume and color
Matter is anything that has volume and temperature
How does the kinetic theory of matter describe the behavior of particle in solids, liquids and gases?
In solids, particles move freely. In liquids, particles vibrate. In gases, particles are fixed in place.
In solids, particles vibrate in place. In liquids, particles move past each other. In gases, particles move rapidly and are spread apart.
In solids, particles are far apart. In liquids, particles are close together. In gases, particles have no energy.
In solids, particles are fixed. In liquids, particles move rapidly. In gases, particles do not move.
Which of the following is an example of an element?
Oxygen (O2)
Water (H2O)
Air
Salt (NaCl)
Describe the phase of BC
Increase in temperature
No increase in temperature
Heat energy released
Heat energy absorbed
This is a cooling curve of naphthalene, C10H8 .Based on the following answer below, which one is the compound that suitable to be used as a substitute for naphthalene and produce the same curve shape.
Water
Glucose (C6H12O6)
Salt (NaCl)
Lauric acid (C12H24O2)
Mimi dries her clothes outside their house on a hot and sunny day. Name the process involved during clothes drying.
Boiling
Melting
Evaporation
Condensation
State the subatomic particles in atoms of various element. (Answer using small letter)
(a)
State the relative mass of electron.
(a)
Najiha had learned about Bohr’s Atomic Model with her chemistry teacher and her teacher asked Najiha to create the Bohr’s Atomic Model atom with her own creativity. Based on the following picture below, which atom model should Najiha refer to?
Studies of atoms started since the introduction of atomic theory by Democritus, a Greek philosopher, around 500 B.C . After that, we know that the atomic structure model has been developed by many scientists’ efforts. Simply describe the development of the atomic structure model by Ernest Rutherford.
Nucleon number of Natrium is 23. Based on the following answer, which one is the to calculate the nucleon number?
Nucleon number = no. of protons + no. of neutrons
Nucleon number = no. of neutrons + no. of electrons
Nucleon number = no. of protons + no. of electrons
nucleon number = no. of protons - no. of neutrons
Picture shows the standard representation of an atom of magnesium element. This atom donate electrons to form an ion, Mg2+ . How many electrons are donated by a magnesium atom to form Mg2+ ion.
(a)
What is X represent for?
Nucleon number
Number of charge
Proton number
Number of electrons
Based on the following answer, all are the correct way to write the electron arrangement of the atom EXCEPT
Aluminium (Al) 2.8.3
Calcium (Ca) 2.8.10
Potassium (K) 2.8.8.1
Natrium (Na) 2.8.1
Both of them has the same number of electrons
True
False
Isotopes are atoms of the same element that have the same number of protons but a different number of neutrons.
True
False
Chlorine-35 and chlorine-37 are both two isotopes of chlorine. They do behave differently in chemical reactions.
True
False
Magnesium exists naturally as three isotopes, which are 79.0% of Mg-24, 10% of Mg-25 and 11% of Mg-26. Calculate the relative atomic mass of magnesium. (Answer in 2 decimal places)
(a)
Which of the following is an example of an isotope of carbon?
Carbon-12
Carbon-13
Carbon-14
All of above
Professor Elly has found fossils of dinasour while doing excavation process to find artifacts and fossils from the past life. What isotope is used to estimate the age of that fossils of dinasour.
Carbon-12
Lead-210
Carbon-13
Carbon-14
