Long Test in Science Grade 8

It is the indivisible building block of matter.

• atom

• electron

• neutron

• proton

Which of the following does the nucleus contain?

• protons and electrons

• protons and neutrons

• neutrons and electrons

• neutrons only

Which of the following statements is correct?

• Protons are positively charged and neutrons are negatively charged.

• Protons are positively charged and electrons are negatively charged.

• Protons are negatively charged and electrons are positively charged.

• Protons are positively charged and neutrons are negatively charged.

Who is the person credited with the formation of the "raisin-bread model" model?

• Thomson

• Bohr

• Rutherford

• Dalton

What subatomic particle represents the "raisins" in the " raisin-bread model " model?

• atom

• electron

• neutron

• proton

Chadwick is credited with discovering which part of the atom?

• atom

• electron

• neutron

• proton

Who is credited with developing the “Planetary Model”?

• Thomson

• Bohr

• Rutherford

• Dalton

Dalton's model of the atom is represented by?

• Solid tiny ball

• Nuclear Model

• Planetary Model

• Raisin-Bread Model

Who discovered the nucleus of the atom?

• Thomson

• Bohr

• Rutherford

• Dalton

Which of the following statements are true about the nucleus?

• It is neutrally charged

• It contains most of the mass of the atom

• is negatively charged

• is almost empty space