Chemistry Chap 4 Atomic structure

Change in an atoms nucleus.

• Chemical reaction

• Mixture

• Nuclear reaction

• Radiation

The atomic mass is the

• number of protons and neutrons inside the nucleus

• number or electrons or protons

• number of protons, neutrons and electrons

If an atom has 3 electrons, how many protons does it have?

• 1
• 2
• 4
• 3

What is at the center of every atom?

• An electron
• A compound
• A molecule
• A nucleus

The positively charged particles of an atom are the ________.

• electrons
• protons
• neutrons
• protons & neutrons

The particles with no charge in an atom are the _______.

• electrons
• neutrons
• protons
• protons and neutrons

What does the nucleus of an atom contain?

• Electrons and neutrons
• Protons and neutrons
• Neutrinos and positrons
• DNA and RN

The total number of protons and neutrons in the nucleus of an atom

• Atomic Number

• Mass Number

• Atomic Theory

• Electron Cloud

Different types of atoms combine together to form ________

• Elements

• Compounds

• Particles

• Molecules

• Element

• Compound