Chem - Lets Talk Science

• ____ is anything that has mass and takes up

  space ?

  Matter
• True or False ? Protons, neutrons and

  electrons are all subatomic particles ?


  True
• True or False ?Any particle bigger than an atom is called

  a subatomic particle ?

  False
• What temperature is known as absolute zero ?

  -273.15
• What is the center of an atom called ?

  The nucleus
• What are the properties for "sight" ?

  Colour Luster
• What are the properties for taste?

  Acidity
• What are the properties for touch?

  Texture Hardness Malleability Ductility Temperature
• ____is the ability of matter to ‘eat away’

  another substance ?

  Corrosiveness
• _____is the ability of matter to burn or

  combust?

  Flammability
• ______is the ability of matter to cause damage to

  living things ?

  Toxicity
• What are the three ways heat can be transferred ?

  Conduction Convection Radiation
• _______happens when materials or objects

  are in direct contact with each other?

  Conduction
• ____ is motion in a gas or liquid

  that is caused by temperature differences?

  Convection
• This is a Bohr model of what atom ?

  carbon

  
• This is a Bohr model of what atom ?

  Nitrogen

  
• This is a bohr model of what atom ?

  Oxygen

  
• Who discovered neutrons ?

  James Chadwick
• When were neutrons discovered ?

  1932
• Name all of the metalloids ?

  Boron, Silicon, Germanium, Arsenic, Antimony, Tellurium,
• What does this symbol mean ?

  Flammable

  
• What does this substance mean ?

  Corrosiveness

  
• What is this symbol ?

  Toxicity

  
• What are all of these ?

  Atomic number, Average Atomic Mass,symbol,name

  
• what is the red ?

  atomic number

  
• What is orange ?

  Symbol

  
• What is the yellow ?

  Name

  
• What is the green ?

  Average atomic mass

  
• A ———- is the amount of energy required to raise the temperature of 1 gram of water by 1 degree Celsius?

  Calorie
• Matter

  Anything that has mass and takes up space
• Particle Theory of Matter


  A scientific model that illustrates ideas, objects and processes to make them easier to understand
• Key ideas of the Particle Theory of Matter

  • All matter is made of tiny particles, either individual atoms or groups of atoms called molecules
  • Atoms of the same element are the same, atoms of different elements are different
  • Particles are attracted to each other by forces
  • Particles of matter have spaces between them
  • Particles are always moving at any temperature above -273.15 degrees Celsius
  • The faster particles move, the warmer they get
• Subatomic particle


  Any particle smaller than an atom
• Atom


  The basic unit of matter, consisting of a nucleus with protons and neutrons, and electrons orbiting the nucleus

  
• Nucleus


  • Contains positively-charged protons and neutral neutrons
  • Gives the atom its positive charge
• Electrons


  • Tiny, negatively-charged particles that orbit the nucleus
  • Most of the mass of an atom is found in its nucleus

  
• The number of protons in the nucleus defines the type of atom

  
• Protons and neutrons in the nucleus are held together by the strong nuclear force

  
• Electrostatic forces keep electrons close to the nucleus
• In a stable atom, the electrostatic forces and kinetic energy of electrons are balanced