Chemistry and Organization of Life

a life science that focuses on the study of living things

• biology

• chemistry

• physics

• science

Any living individual can be called an organism.

• True

• False

_{Which is NOT one of the four elements that make up over 90% of the human body}

• Carbon
• Nitrogen
• Chlorine 
• Oxygen

_{Which of the following is NOT true of atoms?}

• They are composed of molecules.
• They can combine with other atoms.
• They make up elements
• They are extremely small

_{A negatively charged particle moving around the nucleus of an atom}

• neutron
• proton
• electron 
• ion

_{What particle is found in the nucleus and has no charge?}

• electron
• neutron
• proton
• atom

_{An atom becomes negatively charged by}

• gaining an electron
• losing an electron
• losing a proton
  gaining a neutron

_{The space surrounding the nucleus of an atom contains}

• protons
• electrons
• neutrons
• ions

_{Number of protons that an atom has}

• Atomic symbol
• Atomic Number
• Atomic Mass
• Mass Number

Two or more atoms combined

• Molecule
• Compound
• Isotope
• Ion