Atoms

The positive particles of an atom are ___________.

• electrons

• protons

• neutrons

The center of an atom where its neutrons and protons are is called the _____________.

• nucleus

• electron cloud

• center

An atom is made up of protons, neutrons, and electrons.  Which is the smallest subatomic particle?

• Proton
• Neutron
• Electron
• Idontknowatron

Which is an electron?

• A
• B
• C

How many electrons does Si contain? (click to see image)

• 14
• 28
• 2
• 4

What is the mass number and name of an element with 8 protons and 8 neutrons?

• 16 - Carbon
• 16 - Oxygen
• 24 - Oxygen
• 8 - Neon

......is the basic unit of an element that has the same chemical properties of that element

• Molecules

• Atoms

• Electrons

• Neutrons, electrons, protons

......... is the subatomic particles inside the nucleus that has positive charge

• Neutrons

• Protons

• Electrons

......... is the subatomic particles inside the atom that has negative charge

• Protons

• Neutrons

• Electrons

When an atom increases its neutrons, it becomes .........

• Another element

• Isotope

• Positive ion

• Negative ion