Sumatif Tengah Semester Ganjil IPA Billingual Kelas 9

The SI unit of electrical charge is ...............

• Coulomb

• Volt

• Ampere

• Watt

A glass rod becomes positively charged when rubbed with silk. The glass rod becomes charged because it ...............

• Gains protons

• Lose electron

• Gains electron

• Gains proton and lose electron

An atom turns to be negatively charged when .........

• It gains some electrons from another atom

• It loses some electrons from another atom

• It receives some protons from another atom

• It loses some protons from another atom

An object is electrically neutral if it ............

• It gains electron

• It gains or loses neutrons

• It loses electron

• It loses and gains electron

An atom is electrically neutral if it has .........

• Equal number of protons and electrons

• Equal number of neutrons and electrons

• Equal number of protons and neutrons

• Equal number of protons, electrons, and neutrons

The atomic part which is positively charged is ............

• Electron

• Nucleus

• Neutron

• Proton

The content of the atomic nucleus is (are) ...

• Proton and electron

• Proton and neutron

• Electron only

• Electron and neutron

Which of the following statement is correct?

• 1 = electron orbit, 2 = proton

• 3 = proton, 4 = electron

• 1 =electron, 4 = neutron

• 2 = electron, 3 = electron orbit

Which of the atomic structure above are proton, neutron, and electron?

• 2, 4, and 1

• 3, 4, and 2

• 1, 2, and 3

• 2, 3, and 4

Every atom consists of ..........................

• A central nucleus containing electron and neutron, and is surrounded by proton orbiting the nucleus

• A central nucleus containing proton and neutron, and is surrounded by electron orbiting the nucleus

• A central nucleus containing electron and proton, and is surrounded by neutron orbiting the nucleus

• Proton, electron, and neutron