2nd 9 weeks – Review Part 2

Chapters 5-8

2nd 9 weeks – Review Part 2

• What word best describes the type of materials that attract iron?

• A. Magnetic• B. Chemical • C. Mass• D. Physical

• Answer = A, magnetic

2nd 9 weeks – Review Part 2

• Which is an example of a chemical property?• A. Color• B. Mass• C. Density• D. Ability to burn

• Answer = D, ability to burn

2nd 9 weeks – Review Part 2

• 12. Which is an example of a physical change? • A. Metal rusting• B. Silver tarnishing• C. Water boiling• D. Paper burning

• Answer = C, water boiling

2nd 9 weeks – Review Part 2

• What characteristic best describes what happens during a physical change?

• A. Composition changes• B. Composition stays the same• C. Form stays the same• D. Mass is lost

• Answer = B, composition stays the same

2nd 9 weeks – Review Part 2

• Which is an example of a chemical change?• A. Water freezes• B. Wood is carved• C. Bread is toasted• D. Wire is bent

• Answer = C, bread is toasted

2nd 9 weeks – Review Part 2

• Which is NOT a clue that could indicate a chemical change?

• A. Change in color• B. Change in shape• C. Change in energy• D. Change in odor

• Answer = B, change in shape

2nd 9 weeks – Review Part 2

• What property stays the same during physical and chemical changes?

• A. Density• B. Shape• C. Mass• D. Arrangement of particles

• Answer = C, mass

2nd 9 weeks – Review Part 2

• What kind of change is taking place when you cut a piece of cake from the whole?

• Answer: physical change

2nd 9 weeks – Review Part 2

• What kind of change is taking place when a candle is being burnt?

• Answer = a chemical change

2nd 9 weeks – Review Part 2

• What could you do to an object to cause a chemical change?

• A. Cut it• B. Paint it• C. Throw it• D. Burn it

• Answer = d, burn it

2nd 9 weeks – Review Part 2

• Which of the following choices describes a physical change?

• A. Pouring an acid onto calcium carbonate• B. Dropping an antacid tablet into water• C. Heating water to its boiling point• D. Pouring vinegar onto baking soda

• Answer = c, heating water to its boiling point

2nd 9 weeks – Review Part 2

• Which of the following occurs as you heat a liquid to its boiling point?

• A. Condensation• B. Melting• C. Vaporization• D. Freezing

• Answer = c, vaporization

2nd 9 weeks – Review Part 2

• What property enables you to float a needle on water?

A.ViscosityB.TemperatureC.Surface tensionD.Crystal structure

• Answer = C, surface tension

2nd 9 weeks – Review Part 2

• In which case will an object float on a fluid? A.Buoyant force is greater than weightB.Buoyant force is less than weightC.Buoyant force equals weightD.Buoyant force equals zero

• Answer = A or C

2nd 9 weeks – Review Part 2

• What is the process called when a gas cools to form a liquid?

A.CondensationB.SublimationC.BoilingD.Freezing

• Answer = A, condensation

2nd 9 weeks – Review Part 2

• Force is measured by ____________.A.PascalsB.NewtonsC.KilopascalsD.Meters

• Answer = B, Newtons

2nd 9 weeks – Review Part 2

• The freezing point of a substance is _______ the melting point of the same substance.

A.Greater thanB.Less thanC.Equal toD.Unrelated to

• Answer = C, equal to

2nd 9 weeks – Review Part 2

• A cork is able to float on water because it is ___________.

A.A crystalline solidB.Equal in density to waterC.Small in sizeD.Less dense than water

• Answer = D, less dense than water

2nd 9 weeks – Review Part 2

• What holds the nucleus of an atom together?

• Answer = The Strong Nuclear Force

2nd 9 weeks – Review Part 2

• What two things are located in the nucleus of an atom?

• Answer = Positively charged protons and neutrally charged neutrons.

2nd 9 weeks – Review Part 2

• What charge does an electron have?

• Answer = negative

2nd 9 weeks – Review Part 2

• During beta-particle emission, a neutron splits into ____?

• A. A proton and an electron• B. Two protons• C. Two electrons• D. Two neutrons

• Answer = a proton and an electron

2nd 9 weeks – Review Part 2

• Who was the first person to propose what an atom was?

• Answer = Dalton

2nd 9 weeks – Review Part 2

• Explain how Dalton thought an atom looked?

• Answer = Dalton thought that the atom was a solid sphere that was the same throughout

2nd 9 weeks – Review Part 2

• How did Thomson think the atom looked?

• Answer = Thomson thought the atom was an even mixture of positive and negative charges and that it was neutral.

2nd 9 weeks – Review Part 2

• What did Rutherford think about the atom?

• Answer = Rutherford realized that the atom had to have a nucleus. He thought that there was a tiny nucleus filled with positively charged protons and that negatively charged electrons surrounded the nucleus.

2nd 9 weeks – Review Part 2

• What do we know about the model of the atom today?

• Answer = We now know that the atom has a nucleus filled with protons and neutrons and that electrons surround the nucleus.

2nd 9 weeks – Review Part 2

• What is another name for the atomic number of an element?

• Answer = # of protons

2nd 9 weeks – Review Part 2

• How is a period set up on the periodic table?

• Answer: rows/left to right/horizontally

2nd 9 weeks – Review Part 2

• Where are the representative elements on the periodic table?

• Answer = Groups 1-2 and groups 13-18

2nd 9 weeks – Review Part 2

• How is a group (or family) set up on the periodic table?

• Answer = up and down/vertically

2nd 9 weeks – Review Part 2

• Where are the transition elements on the periodic table?

• Answer = groups 3-12

2nd 9 weeks – Review Part 2

• Which element is NOT part of the iron triad? • A. Nickel• B. Copper• C. Cobalt • D. Iron

• Answer = B, copper

2nd 9 weeks – Review Part 2• Which statement about the periodic table is TRUE? • A. Elements all occur naturally on Earth.• B. Elements occur in the order in which they were

discovered. • C. Elements with similar properties occupy the same

group. • D. Element are arranged in the order Mendeleev chose.

• Answer = C, elements with similar properties occupy the same group.

2nd 9 weeks – Review Part 2

• Which of the following statements about Iron is NOT correct?

• A. Iron is found in the hemoglobin of red blood cells

• B. Iron is a component of steel• C. Iron is a member of the iron triad• D. Iron is a metalloid

• Answer = d, iron is a metal not a metalloid

2nd 9 weeks – Review Part 2

• Who created the first version of the periodic table – Moseley or Mendeleev?

• Answer = Mendeleev

2nd 9 weeks – Review Part 2

• What is the name given to a row of elements in the periodic table whose densities and melting points change gradually and predictably?

• Answer = a period