Chapter 3 and 4 Midterm Review

States of Matter/Chemical and Physical Changes

100

_________ must be _________ (added/removed) to convert a substance from a solid to a liquid.

What is heat/added?

200

________ possess more energy of motion than liquids.

What are gasses?

300

Sodium bicarbonate is mixed with hydrochloric acid, and CO2 gas is produced and released as fizzing. This is a ___________________ change.

What is a chemical change?

400

Potassium iodide and lead nitrate (both colorless liquids) are mixed, resulting in the formation of lead iodide, a yellow solid. This is a ___________________ change. 

What is a chemical change?

500

Green food dye is added to water, and the water turns green. This is a ____________________ change.

What is a physical change?

Element, Compound, or Mixture

100

Iron filings

What is an element?

200

Water

What is a compound?

300

Table salt mixed with water

What is a homogeneous mixture?

400

Air

What is a homogeneous mixture?

500

Blood that has been sitting in a tube for 3 days

What is a heterogeneous mixture?

Scientists

100

The scientist who used cathode ray tubes to discover the electron

Who is JJ Thomson?

200

The scientist who conducted the famous gold foil experiment to discover the nucleus

Who is Ernest Rutherford?

300

The scientist who discovered the charge on the electron

Who is Robert Millikan?

400

The scientist who came up with the Law of Definite Proportions

Who is Joseph Proust?

500

The scientist who proposed that electrons belong in specific orbitals around the nucleus of an atom

Who is Niels Bohr? 

Atomic Symbolism

100

The atomic number of Nickel

What is 28?

200

The number of protons in the following:

²⁵​​​₁₂Mg²⁺​​​​

What is 12? 

300

The number of neutrons in the following:

⁵²₂₄Cr³⁺

What is 28?

400

The number of protons in Ag-108

What is 47?

500

The number of electrons in the following:

⁸⁰₃₅Br^1-

What is 36?

Nuclear Chemistry

100

This radioactive particle is most similar to a helium atom

What is an alpha particle?

200

This radioactive particle is made of just energy and causes no change in mass to nuclei when emitted

What are gamma rays?

300

Complete the following nuclear equation: 

          ²²⁶₈₈Ra       ----->     alpha particle  +  ?

What is:

 ²²⁶₈₈Ra       ----->     alpha particle  +   ²²²₈₆Rn ?

400

Complete the following nuclear equation: 

          ⁶⁰₂₇Co       ----->     beta particle  +  ?

What is:

       ⁶⁰₂₇Co       ----->     beta particle  +  ⁶⁰₂₈Ni

500

Complete the following nuclear equation: 

          ?      ----->     beta particle  +  ²¹⁴₈₃Bi

What is:

 ²¹⁴₈₂Pb       ----->     beta particle  +  ²¹⁴₈₃Bi