Unit 1 Practice Test

Subatomic particle with a charge of 0

• neutron
• proton
• electron
• quark

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

Subatomic particles with a positive charge

• neutrons
• atomic mass
• protons
• isotopes

What is this subatomic particle that has negative charge?

• Electron

• Neutron

• Proton

• Megatron

What is the smallest particle of an ELEMENT, and it has also all the properties of it?

• Molecules

• Nucleus

• Subatomic particle

• Atoms

What is the small, DENSE REGION consisting of protons and neutrons at the CENTER of an atom?

• Molecules

• Nucleus

• Subatomic particle

• Atoms

Which two subatomic particles make up the nucleus of an atom?

• Protons and Electrons
• Neutrons and Electrons
• Electrons and Protons
• Protons and Neutrons

In a neutral atom,

• protons = electrons

• protons = neutrons

• neutrons = electrons

• protons = neutrons = electrons

What is one way Neutrons are different from electrons?

• they both are negative

• neutrons have no charge, while electrons have a negative charge

• Both are in the nucleus( center of atom)

• Electrons are inside nucleus and neutrons are outside the nucleus.

In order for an atom to be neutral what has to be true?

• The atom has more protons than neutrons
• The atom has more neutrons than protons
• The atom has the same number of protons and neutrons
• The atom has the same number of protons and electrons