2.1 Basic Concept of Matter

When an ice cream melts, the kinetic energy of the particles

• increases

• decreases

Alice was riding a bicycle when she was suddenly passed over by a pick up truck that spewed black smoke, causing her shirt to be full of dark material. Name this process.

• Melting

• Deposition

• Evaporation

• Condensation

Which scientist proposes such an atomic model?

• John Dalton

• JJ Thompson

• Ernest Rutherford

• Niels Bohr

• James Chadwick

Which scientist proposes such an atomic model?

• John Dalton

• JJ Thompson

• Ernest Rutherford

• Niels Bohr

• James Chadwick

Which scientist proposes such an atomic model?

• John Dalton

• JJ Thompson

• Ernest Rutherford

• Niels Bohr

• James Chadwick

What is the type of particle that exists in sodium chloride, NaCl?

• Ion

• Atom

• Molecule

• Plasma

What is the type of particle that exists in benzene,

 $C_6H_6$  ?

• Ion

• Atom

• Molecule

• Plasma

What is the type of particle that exists in ethanol,  $C_2H_5OH$  ?

• Ion

• Atom

• Molecule

• Plasma

What is the type of particle that exists in naphthalene,  $C_{10}H_8$  ?

• Ion

• Atom

• Molecule

• Plasma

What is the type of particle that exists in magnesium fluoride,  $MgF_2$  ?

• Ion

• Atom

• Molecule

• Plasma