Unit 1 - Electrons

electrons

• hạt electron

• hạt nơ-tron

• hạt proton

• hạt nhân

'Subatomic particles' means ...... in Vietnamese.

• các hạt nguyên tử con

• các hạt nguyên tử nhỏ

• các hạt nguyên tử phụ

• các hạt hạ nguyên tử

If the atom has a bigger number of protons than that of electrons, it is ........

• said to be able to repel an electron.

• positively charged

• electrically neutral

• negatively charged

A smallest particle of a chemical compound is ...

• molecule

• magnetic domain

• atom

• crystal

...... means "lực ly tâm"

• centrifugal force

• centripetal force

• attraction force

• repulsion force

The attraction of a charged balloon to a wall or to some other surface is due to .....

• gravitational force

• electrostatic force

• adhesive force

• electrodynamic force

An atom that contains the same number of electrons and protons is said to be electrically ......

• active

• neutral

• charged

• unbalanced

...... means "hạt nhân nguyên tử"

• atom shell

• atom's nut

• nucleus

• atom mass

Nucleus contains .....

• protons and neutrons

• electrons and protons

• protons and atoms

• electrons and neutrons

A tiny particle revolving around the nucleus is called ...

• electron

• proton

• neutron

• quark