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S3 Exp Science Chem Bridging 2024 #01
Quiz by Boh Peng
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The atomic structures of four different particles are shown.
AB
B
C
D
Gallium combines with sulfur to make an ionic compound gallium sulfide. The formula of gallium sulfide is Ga2S3.
Which row describes the melting point of gallium sulfide and the formulae of the ions in the compound?
A
B
C
D
The atomic structures of four different particles are shown.
Gallium combines with sulfur to make an ionic compound gallium sulfide. The formula of gallium sulfide is Ga2S3.
Which row describes the melting point of gallium sulfide and the formulae of the ions in the compound?
Element R has12 protons. Element Q has 8 more protons than R.
Which statement is correct?
Which statement describes the formation of a covalent bond?
Which diagram represents a mixture?
Which statement about ionic substances is correct?
U, V, W, X, Y and Z are elements in the same period of the Periodic Table.
The letters are not the chemical symbols of the elements. Their electronic configurations are shown.
Which statements about the elements are correct?
1 W,X, and Y are non-metals because they lose electrons when they react.
2 U, Vand Z are metals because they gain electrons when they react.
3 W, Xand Y are non-metals because they gain electrons when they react.
4 U, Vand Z are metals because they lose electrons when they react.
Which ions are present in solid chromium sulfate, Cr2(SO4)3?
Which diagram represents a change of state in which the energy of the particles is lost?
The diagram shows the structure of an atom.
Which atom is represented by the diagram?
X is a covalently bonded compound made from the elements chlorine and oxygen.
Which 'dot and cross' diagram shows the arrangement of outer shell electrons in a molecule of X?
Elements X and Y are in the same period of the Periodic Table. X is a metal and Y is anon-metal.
Which statement is correct?
Two elements, A and B, form a compound of formula AB3. A 'dot and cross' diagram of a molecule of AB3is shown. Only the outer shell electrons are shown.
Which statement is not correct?
Which method is used to obtain potassium chloride crystals from an aqueous solution of potassium chloride?
Which statement about isotopes of the same element is correct?
Element A is a metal and element B is a non-metal.
Which statement is correct?
Element X has the electronic configuration2,4.
Element Y has the electronic configuration2,6.
What is the formula of the compound formed between X and Y?
Calcium phosphate has the formula, Ca3(PO4)2.
What is the charge on the phosphate ion?
Sodium chloride, NaCl, is an ionic compound.
Which statement about sodium chloride is not correct?