SNC1D Chemistry Practice Unit Test

SNC 1D0 Atoms & Elements Unit Test

Name: _________________________ Date: _________________________

KNOWLEDGE AND UNDERSTANDING COMMUNICATON INQUIRY

/ 42 marks / 13 marks / 20 marks

TOTAL

/ 75 marks

PART A: MULTIPLE CHOICE (Knowledge and Understanding)

[10 marks]

Place the letter of the BEST response ON THE BLANK LINE next to the question (MAKE YOUR LETTERS CLEAR). ____

1. A change of state that involves a LOSS of energy is… a. Melting b. Freezing c. Vaporizing

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2. A change of state that occurs when a gas turns into a liquid is called… a. Liquification b. Sublimation c. Vaporization d. Condensation

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d. Substituting

e. All of the above

e. None of the above 3. According to the particle theory, particles are MORE attracted to each other when they… a. Have high energy c. Are close together e. None of the above b. Have no energy d. Are far apart 4. According to the particle theory, an increase in temperature means that the… a. Speed of the particles increases c. Substance becomes a gas b. Speed of the particles decreases d. Density increases 5. What is the density of gold if a gold brick with a volume of 75cm3 has a mass of 1500g? a. 0.05 g/cm3 c. 1575 g/cm3 e. None of the above 3 b. 20 g/cm d. 112 500 g/cm3 6. The majority of the elements in the periodic table are: a. Non-metals b. Metals c. Metalloids d. Gases e. They are all different 2+ 7. Ca indicates that calcium… a. Has lost 2 electrons c. Has gained 2 protons e. Is an isotope b. Has gained 2 electrons d. Has lost 2 neutrons 8. The 14 in Carbon-14 indicates… a. the group # b. # of neutrons c. # of protons d. # of electrons e. the atomic mass 9. Which of the following does not belong? a. rocks b. juice c. plasma d. car exhaust e. None of the above 10. Which of the following indicates a chemical change? a. Eggs b. Rain c. Fog on d. Tea made from e. None of the frying clouds mirrors after tea bags and hot above forming showering water

PART B: COMPLETE THE TABLES (Knowledge and Understanding)

[12 marks]

1. Complete the following table. BE SURE TO INCLUDE UNITS WHEN NEEDED (1 mark each box) Type of Particle Charge Location in the Atom Proton Electron Neutron 2. Complete the following table using JOT NOTES. (1 mark each box) Classification (Element, Compound, Substance Homogeneous mixture or Heterogeneous mixture)

Justification for Classification

Chlorine gas (Cl2) Bubbly drink (ex. Sprite) PART C: MATCHING (Knowledge and Understanding)

[12 marks]

Match the terms in with the appropriate definition or phrase. (Each definition is only used once so select the BEST match for each and MAKE YOUR LETTERS CLEAR). Definition 1. Developed the theory of a nucleus to explain his gold foil experiment. 2. Examples would be Boron, Germanium, and Tellurium 3. 4. 5. 6. 7. 8. 9. 10. 11. 12.

CO2 would be an example of how to write this. Are usually shiny, silver elements that can conduct electricity A capital letter followed by a lower case letter. The formation of a new substance occurs. Forming liquid metal into a mould then cooling it to form a solid car part. Developed the theory that atoms are indivisible spheres like billiard balls. Examples would be Carbon, Sulfur and Iodine. Greek philosopher who tried to change the four element view of matter. Developed a theory of electron orbits to explain the spectra of elements. Developed the “raisin bun” (aka chocolate chip cookie) theory of the atom where electrons are small bits in a positive sphere.

PART D: SHORT ANSWER (Knowledge and Understanding)

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Term A. Physical change B. Chemical change Chemical C. formula D. Chemical symbol E. Pure substance F. Mixture G. Bohr H. Rutherford I. J.J. Thompson J. Nagaoka K. L. M. N. O. P. Q.

Dalton Mendeleev Democritus Alchemist Metal Metalloid Non-metal

[8 marks]

1. Name the atoms AND state the number of atoms in the following compounds. (1 mark each box) Type of atoms a)

H3PO3

b)

Pb(NO3)2

Number of each type of atom

c) Place the name of the family from the periodic table on the blank line beside each description below. i)

Family which are unreactive

__________________________

ii)

Family of extremely reactive NON-METALS

__________________________

iii)

Family of METALS that is most reactive __________________________

iv) Family that has 2 valence electrons

__________________________

PART E: WORD EQUATIONS (Communicaton)

[4 marks]

Write a proper WORD EQUATION for the following. (2 marks each) 1. Potassium chlorate, when heated, breaks down into potassium chloride and oxygen gas.

2. Hydrochloric acid combined with magnesium metal creates magnesium chloride and hydrogen gas.

PART F: CREATING TABLES (Communicaton)

[9 marks]

1. Adam Ikmass and Alec Trawn observed the PHYSICAL AND CHEMICAL PROPERTIES of three common substances and recorded their observations as follows: Table salt properties

White; crystalline solid; has a density of 2.16 g/cm3; liquefies at 801°C; non-combustible

Sulfur

Burns in air; reacts with oxygen to form sulfur dioxide (SO2) gas; melts at 112.8°C; non-combustible

Alcohol

Colourless; liquid at 20°C; low viscosity; pure sample has a density of 0.789 g/cm3; combustible – burns in air with a blue flame

ORGANIZE this information into a PROPER DATA TABLE that classifies the properties of the substances under the column headings: SUBSTANCE, QUALITATIVE PHYSICAL PROPERTIES, QUANTITATIVE PHYSICAL PROPERTIES, and CHEMICAL PROPERTIES. (BE SURE TO INCLUDE A PROPER TITLE) (9 marks)

PART G: PERIODIC TABLE TRENDS (Inquiry)

[6 marks]

1. The HYPOTHETICAL periodic table shown below is organized in the same way the real periodic table is organized but with fewer rows and columns. Using the letters indicated in the hypothetical periodic table answer the following questions. (Letters may be used more than once) (1 mark per question) J K F D

R Q

a)

Which pair of elements has the same number of valence electrons? _______________________

b)

Which pair of elements is in the same period?

_______________________

c)

Which pair of elements is in the same group?

_______________________

d)

Which element has the largest atomic number?

_______________________

e)

Which element(s) would be classified as metals?

_______________________

f)

If element D’s atomic number is 20 what number is element R?

_______________________

PART H: ELEMENT PROPERTIES (Inquiry)

[14 marks]

In “Middle Earth” three new elements were discovered. Some of their properties are listed in the table below. Element Name # of protons # of neutrons # of electrons Gandolfium (Gf) 12 14 12 Smeagolium (Sl) 20 21 18 Frodonium (Fd) 9 9 10 1. Use the table of elements shown above to complete the following table. (1 mark each) Element Name

Atomic Number

Atomic Mass

Gandolfium (Gf) Smeagolium (Sl) Frodonium (Fd) 2. Use the table of elements shown above to answer the following questions in the space provided. (1 mark each) a)

Which element(s) is made up of CHARGE-STABLE atoms? _______________________

b)

Which element(s) has (have) a positive electrical charge?

_______________________

c)

Which element(s) is (are) ions?

_______________________

3. Draw a Bohr-Rutherford diagram of Frodonium in the space provided. (2 marks)

4. Based on your knowledge of the periodic table are Gf, Sl, and Fd actually new elements? Explain why or why not. _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ _____________________________________________________________________________

T/I=

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