5.1 Inside the Atom Text reading worksheet

What are the building blocks of all matter?

• Atoms

• Molecules

• Cells

• Compounds

Which part of the atom contains most of its mass?

• Electron cloud

• Nucleus

• Proton

• Neutron

What is the approximate size of the nucleus if an atom were the size of a football stadium?

• A basketball

• A baseball

• A pea

• A grain of sand

What is the term for the smallest particles of an element that still have the element’s properties?

• Atoms

• Molecules

• Ions

• Isotopes

What type of charge does a proton have?

• Negative

• Positive

• Neutral

• No charge

Where are electrons located in an atom?

• Inside the nucleus

• Outside the nucleus

• In the center of the nucleus

• Between protons and neutrons

What is the charge of a neutron?

• Positive

• Negative

• Neutral

• Double positive

How many protons does a carbon atom typically have?

• Four

• Six

• Eight

• Ten

What makes atoms electrically neutral?

• Equal number of protons and neutrons

• Equal number of electrons and neutrons

• Equal number of protons and electrons

• More protons than electrons

What force keeps electrons moving around the nucleus?

• Gravitational force

• Magnetic force

• Strong force

• Electric force