1st Semester Review: Question Preview (ID: 22749)

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Which medium-energy state of matter has a definite volume, but changing shape?
a) Solids
b) Liquids
c) Gases
d) Plasma

A rock has a mass of 20 grams and a volume of 5 milliliters. What is its DENSITY?
a) 25 g/mL
b) 100 g/mL
c) 4 g/mL
d) 15 g/mL

Which is a METRIC measurement unit of length?
a) meters
b) inches
c) miles
d) feet

Which does NOT occur during a chemical reaction?
a) Chemical bonds are broken and formed.
b) Energy is often released or absorbed.
c) New and different substances are formed.
d) Matter is created or destroyed.

Which type of chemical bond hold together the atoms in table salt, NaCl?
a) Covalent
b) Ionic
c) Electrostatic
d) Metallic

This family of elements is Group 18 on the Periodic Table. It consists of unreactive gases.
a) The Alkali Metals
b) The Halogens
c) The Noble Gases
d) The Oxygen Group

A mysterious substance is dull, brittle, and does not conduct heat or electricity. It is most likely a:
a) Nonmetal
b) Metalloid
c) Metal
d) Alloy

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, 11 neutrons, and 23 electrons
b) 11 protons, 23 neutrons, and 11 electrons
c) 11 protons, 11 neutrons, and 12 electrons
d) 11 protons, 12 neutrons, and 11 electrons

How many atoms are in the compound methane, CH4?
a) 2
b) 4
c) 5
d) 8

Which list is made up entirely of COMPOUNDS?
a) gold, oxygen, and sodium
b) lemonade, cupcakes, and saltwater
c) bronze, soil, and ooblek
d) water, salt, and sugar

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