Download Elements and Compounds TEST

Study Guide for 1 st Semester EXAM – 2016-2017
1. Explain why fossil fuels are nonrenewable:
9. Substances that are ______________ dense float on
_____________________________________________
substances that are __________________ dense.
_____________________________________________
How many elements are in the compound above? __________
10. List five indications (signs) that a chemical change is
taking place:
_____________________________________________
How many atoms are in the compound? ____________
_____________________________________________
2. KMnCl2K
3. What is the smallest part of an element that still
retains properties of that element? _________
4. List the major elements in Earth’s crust:
_____________________________________________
_____________________________________________
_____________________________________________
11. Describe the energy transformations that occur
when a hair dryer is turned on:
__________________________________________
_____________________________________________
_____________________________________________
12. During energy transformations some energy is
5. What are the two most abundant gases in the earth’s
atmosphere? ____________________________
always transformed into …? ___________________
6. Classify the following properties as physical or
chemical:
(Hints: Can you observe the property without changing
the matter? Reactivity is always a chemical property.)
__________________________________________
Property
malleability
color
thermal conductivity
reactivity with oxygen
flammability
reactivity with acid
density
volume
solubility
Physical
Chemical
14. Give some examples of things that start with
chemical energy:
________________________________________
15. What is the name of the hardness scale used to
classify minerals?
________________________________________
16. In your own words define:
7. Classify the following changes as physical or
chemical:
(Hints: Has new matter been formed? Reactions are
always chemical changes.)
Change
silver tarnishing
baking a cake
melting
rusting
burning
dissolving
copper reacting with air
bleaching
breaking a pencil
stretching
13. Describe the energy transformations that occur
when a toaster is turned on:
Physical
8. A chemical change has taken place if a
_________ ______________ has formed.
Chemical
 Conduction: __________________________
__________________________________
 Convection: __________________________
__________________________________
 Radiation: ___________________________
__________________________________
17. Thermal energy is transferred as heat from a
warmer object to a cooler object until ______________
____________________________________________.
18. List some renewable, nonrenewable, and
inexhaustible energy resources:
Energy Resources
Renewable
Nonrenewable
Inexhaustible
23. Where are the following on the periodic table?
Metals: ___________________________________
Nonmetals: _______________________________
Metalloids: _______________________________
24. Fill in the blanks in the following table:
Element Name
Chemical Symbol
Hydrogen
19. Describe the energy transformations in a thermal
power plant (such as a coal burning plant):
________________________________________
________________________________________
20. How is mineral hardness measured?
________________________________________
________________________________________
21. How can you determine the density of an
irregular solid?
____________ ___________________________
________________________________________
22. Calculate the densities of the following
substances. Use the griddables below to record your
answers:
Volume
Mass
K
Fe
Sodium
25. Describe the energy transformations for each
energy resource:
Windmill ________________________________________
Hydroelectric Power Plant –
________________________________________
Solar Water Heating Panel –
________________________________________
1
26 cm3
78 g
2
47 cm
3
249.1 g
3
16 cm3
51.2 g
4
Phosphorus
Julius has a cube of metal that measures 2 cm
on a side. Its mass is 80.8 grams. What is its
density?
Geothermal Power Plant –
________________________________________