Chemistry of Life

_{Substances that dissociate in water and release hydrogen ions (H+)}

• bases
• acids
• compounds
• ions

_{Used to indicate acidity or alkalinity of a substance. Ranges from 0-14. Each unit has a 10 times difference in acidity or alkalinity}

• acid scale
• base scale
• pH scale
• ion scale

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

• Carbon
• Nitrogen
• Chlorine 
• Oxygen

Tags

NGSS.HS-LS1-6

_{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

Tags

NGSS.MS-PS1-1

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

• neutron
• proton
• electron 
• ion

Tags

NGSS.HS-PS1-1

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

• electron
• neutron
• proton
• atom

Tags

NGSS.MS-PS1-1

_{An atom becomes negatively charged by}

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

Tags

NGSS.HS-PS1-1

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

• protons
• electrons
• neutrons
• ions

Tags

NGSS.MS-PS1-1

_{Number of protons that an atom has}

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

Tags

NGSS.MS-PS1-1

_{What determines the chemical properties of an atom?}

• The number of protons in the nucleus
• Number of electrons in the outside shell
• The number of protons in the outside shell
• The number of electrons in the nucleus

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2