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1st Semester Review
Test Description: Last challenge!
Instructions: Answer all questions to get your test result.
1) Which is a METRIC measurement unit of length?
A
miles
B
inches
C
feet
D
meters
2) A rock has a mass of 20 grams and a volume of 5 milliliters. What is its DENSITY?
A
15 g/mL
B
4 g/mL
C
100 g/mL
D
25 g/mL
3) Which medium-energy state of matter has a definite volume, but changing shape?
A
Plasma
B
Liquids
C
Gases
D
Solids
4) Which list is made up entirely of COMPOUNDS?
A
water, salt, and sugar
B
lemonade, cupcakes, and saltwater
C
bronze, soil, and ooblek
D
gold, oxygen, and sodium
5) How many atoms are in the compound methane, CH4?
A
4
B
2
C
5
D
8
6) The element sodium has an atomic number of 11 and an atomic mass of 23.1. To model an atom of Na, you would need:
A
11 protons, 23 neutrons, and 11 electrons
B
11 protons, 11 neutrons, and 23 electrons
C
11 protons, 12 neutrons, and 11 electrons
D
11 protons, 11 neutrons, and 12 electrons
7) A mysterious substance is dull, brittle, and does not conduct heat or electricity. It is most likely a:
A
Alloy
B
Nonmetal
C
Metal
D
Metalloid
8) This family of elements is Group 18 on the Periodic Table. It consists of unreactive gases.
A
The Oxygen Group
B
The Halogens
C
The Alkali Metals
D
The Noble Gases
9) Which type of chemical bond hold together the atoms in table salt, NaCl?
A
Metallic
B
Ionic
C
Electrostatic
D
Covalent
10) Which does NOT occur during a chemical reaction?
A
New and different substances are formed.
B
Matter is created or destroyed.
C
Chemical bonds are broken and formed.
D
Energy is often released or absorbed.
*select an answer for all questions
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