Atoms Pretest

What particle provided the positive charge for an atom?

• proton 
• neutron
• electron
• nucleus

An atom has 25 protons and 30 neutrons. How many electrons are needed to make the atom neutral?

• 0

• 25

• 30

• 35

Tags

NGSS.MS-PS1-1

The smallest particle of an element is known as the

• Periodic Table

• Atom

• Group

• Period

Tags

NGSS.MS-PS1-1

Each neutron has a _________________ charge.

• positive

• negative

• neutral

• shocking

What subatomic particles would you find in the nucleus of an atom?

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

Tags

NGSS.MS-PS1-1

Complete the missing label on the diagram.

• Neutron
• Centre
• Nucleus
• Sub atomic particle

Tags

NGSS.MS-PS1-1

What particle of the atom uniquely identifies/determines an element?

• Number of Valence Electrons

• Number of Protons

• Number of Electrons

• Atomic Mass

Which statement explains why most of the mass of an atom is contained in the relatively small nucleus?

• Atoms are composed of less dense sub-units than the nucleus

• The nucleus is located at the center of an atom

• Protons and neutrons have more mass than electrons

• Atoms are composed of mostly empty space

A subatomic particle that has a negative charge is called --

• a proton

• a neutron

• an electron

• the nucleus

When an atom has the same number of protons and electrons, the atom is __________?

• neutron

• neutral

• newton

• nutella