1st Monthly Examination in General Chemistry 1

Complete Name (Juan P. Dela Cruz)

Level and Section/Strand

• 12-Corinthians STEM AM
• 12-Corinthians STEM PM
• 12-Colossians STEM PM

The following are the subatomic particles EXCEPT ONE.

• proton
• neutron
• nucleus
• electron

What do you call the atoms that have the same number of protons but differ in the number of neutrons?

• atomic number
• isotopes
• mass number
• atomic mass

Where can the mass number of an atom be obtained?

• through the number of protons and neutrons
• through the number of protons and electrons
• through the number of protons, electrons and neutrons
• through the number of electrons and neutrons

What is the atom that has a positive charge?

• cation
• anion
• polyatomic ion
• ionic bond

What are the numbers of neutrons for the three isotopes of oxygen (Oxygen-16, Oxygen-17, Oxygen-18)?

• 7, 8 and 9
• 8, 9 and 11
• 8, 9 and 10
• 7, 9 and 10

How can the atomic mass of an atom be obtained?

• the weighted average of all naturally occurring isotopes of the atom
• the sum of protons and neutrons in the atom
• the percentage of the neutrons and electrons
• the product of protons, neutrons and electrons

It is also defined as a shorthand of expressing the types and the number of atoms in a substance.

• chemical name
• chemical formula
• ionic compound
• covalent compound

What type of atoms does ionic compound form?

• metal and metallic compound
• non-metal and metal
• metal and non-metal
• non-metal and metalloid