Mr Hossameldin Mohamed

Water molecule - Science

The apparent motion of sun - Physics

Fluorine ion - Science

Translational and periodic motion - Physics

Name of the produced gas - Science

Magnitude of forces - Physics

Type and formula of the compound - Science

Volume and mass of the cylinder - Physics

Degree of chemical activity - Science

Absolute error in measuring the area - Physics

Paraffin oil - Science

The relative error - Physics

Type of oxide - Science

The ratio between the covered distance and the displacement of the body - Physics

The atomic size of the element - Science

The ratio of the diameter of the atom to that of its nucleus - Physics

Symbol indicates the elements - Science

Type of measurement - Physics

Reaction of potassium with water - Science

Summation of vectors - Physics

Type of the formed solution - Science

The net force on the body - Physics

The most chemically active element - Science

Vernier caliper - Physics

Density of elements - Science

Accuracy of measurement - Physics

Properties of three elements - Science

Components of a vector - Physics

Formation of a salt - Science

Mathematical expressions of vectors - Physics