1) Which of the following properties of sugar is not a physical property?

a) Sugar turns black when it is heated.

b) Sugar dissolves readily in water.

c) Sugar has a sweet taste.

d) Sugar is a white solid at room temperature.

2) In a chemical reaction

a) The particles have changed and have different properties

b) The particles are the same just have greater attraction

c) The particles are the same just have more energy

d) The particles have changed but the process can be reversed

3) Which one of the following is an example of a chemical change?

a) the melting of candle wax

b) making sawdust by sawing wood

c) the rotting of food

d) the breaking of glass

4) Which of these is NOT a physical property of a metal?

a) brittle

b) lustrous

c) malleable

d) conducts electricity

5) Which of these form a heterogenous mixture?

a) Water and sugar

b) Salt and water

c) Sand and water

d) Water and food colouring

Name

6) When some solid mothballs are placed in a clothes closet, they gradually disappear over a period of time. The change of state that occurs is…

a) Evaporation

b) Sublimation

c) Condensation

d) Melting

7) Which of these is not a pure substance?

a) Atom

b) Molecule

c) Element

d) Heterogenous mixture

8) The density of ice is 0.92 g/cm3 and the density of rubbing alcohol is 0.80 g/cm3.

If an ice cube is placed in a container of rubbing alcohol, the ice cube will…

a) float in the rubbing alcohol with none of the ice cube submerged.

b) sink to the bottom of the container.

c) move up and down in the rubbing alcohol.

d) float in the alcohol so that most of the ice cube is below the surface of the liquid.

9) The center of the atom is called the:

a) electron

b) orbital

c) middle

d) nucleus

10) Which of these would not be a good indication of a chemical reaction?

a) A solid material forms in a liquid

b) A solid melts

c) Heat is given off

d) Light is given off

11) Draw the bohr diagram for an atom of Nitrogen.

12) Draw the bohr diagram for an ION of Oxygen.

13) Using Bohr diagrams, show how Magnesium and Chlorine would combine. What type of bond do they form?

14) State the chemical formula and the name for the following compoundsa)Magnesium + Flourine b)BOTH versions of Iron + Chlorine c) Barium + Carbonate

16) Match the concept with the definition (K = 6)Malleable ___ A) The amount of light that reflects off an objects surfaceDensity ___ B) Ability to be hammered into sheetsHardness ___ C) The amount of mass in a given volume Lustre ___ D) The ability of matter to be poured Ductility ___ E) An object that can be pulled into a wireViscosity ___ F) The ability of an object to be dented or scratched

17) Each of the following statements are FALSE. Please correct them. (A = 4)

 

a) Electrons are found in the nucleus of the atom.

 

 

b) In order for an ion to form, an atom must capture or lose protons.

c) In a pure substance, there is only one kinds of atom present.

 

  

d) An indicator for a chemical reaction is a melting.

14) List the similarities/differences between ionic and covalent bonds…

15) WHAT IS AN ALLOY???

17) Identify some of the properties of the halogens. With reference to atom structure, explain why all members of this group share the same properties. Give one example.

(K = 4)

18) a) Describe one way that elements and compounds are the alike. (K = 1)

b) Describe one way that elements and compounds are different. (K = 1)

19) Please name these elements below (K = 5 )

He___________

P___________

Be ___________

N ___________

Ne ___________

20) You find a piece of metal in an old chest in your attic. It looks like gold, but it could be a cheap metal made to look like gold. You remember from your science class that gold has a high density of close to 20 g/cm3, and that gold is much denser than most other metals. You decide to carry out an experiment to measure the density of the piece of metal that you found; the mass of the metal is found to be 687 g and its volume is 54 cm3. Based on these measurements, is it likely that the metal you found is gold? (A = 5)

13) Draw Bohr-Rutherford diagrams for the following: (A = 12)  a) Phosphorus   

   b) An element which has 3 electrons in the third

orbital and 14 neutrons in the nucleus. Draw the Bohr Rutherford diagram and identify the element.

c) Draw the IONIC form of Oxygen.

14) In most periodic tables, Hydrogen is placed in the same column as the Alkali metals, but is considered to be its own separate group. a)Give one reason why Hydrogen should be in this column. (A = 1)

b) Give one reason why Hydrogen shouldn’t be considered an Alkali metal. (A = 1)

15) Please indicate the number of atoms of each element in the following compounds: (K = 3 .5 for each correct atom #/element)a)NaClO3

b) 3 Ca(OH)2

16)Please give the scientific name for the following compounds. (K = 2)

a)NaF __________________________________________

b)SiS2

__________________________________________