2nd Monthly Learning Assessment - Science 8

____________, a Greek philosopher thought that matter is made up of “primal matter” which is water, because water is found everywhere.

• Democritus

• Aristotle

• Thales

• Heraclitus

Who discovered the neutrons?

• Ernest Rutherford

• James Chadwick

• J.J Thomson

• Neils Bohr

What is the element located in Period 5 Group 11?

• Cadmium

• Palladium

• Gold

• Silver

What is the element located in Period 3 Group 16?

• Phosphorus

• Sulfur

• Chlorine

• Selenium

It is the smallest unit of matter that retains the identity of the substance.

• Atom

• Molecule

• Matter

• Element

What is the atomic number of Lead?

• 62

• 52

• 82

• 72

It is a negatively charged subatomic particles that is found in the space outside the nucleus.

• Protons

• Electrons

• Nucleons

• Neutrons

How many elements are there in Group 8?

• 4

• 5

• 6

• 7

How many elements are there in the modern periodic table of elements?

• 108

• 118

• 128

• 138

__________, thought that fire is the primal matter.

• Democritus

• Aristotle

• Thales

• Heraclitus