Chemistry Review Question Preview (ID: 60667)


Chemistry 1st Semester Review. TEACHERS: click here for quick copy question ID numbers.

How many valence electrons does Silicon have?
a) 3
b) 4
c) 14
d) 15

Which of the following is an intensive property?
a) melting point
b) mass
c) length
d) volume

What type of mixture is saltwater?
a) compound
b) heterogeneous mixture
c) homogeneous mixture
d) pure substance

Why type of reaction takes one reactant and breaks it down into 2
a) Synthesis
b) Single replacement
c) combustion
d) decomposition

What is the molar mass of CH4?
a) 12
b) 14 g/mol
c) 16 g/mol
d) 16

How many oxygen atoms are in 3CO2?
a) 2
b) 4
c) 6
d) 8

Rank Boron, Fluorine, Aluminum and Gallium in order of least to greatest Atomic Radius
a) Boron, Fluorine, Aluminum, Gallium
b) Fluorine, Boron, Aluminum, Gallium
c) Gallium, Aluminum, Fluorine, Boron
d) Aluminum, Gallium, Fluorine, Boron

Group 13 has _____ valence electrons. It is more likely to __________ its valence electrons
a) 13, steal
b) 13, give away
c) 3, steal
d) 3, give away

Which is a way a piece of paper can go through a chemical change?
a) Fold the paper in half
b) burn it
c) soak it in water
d) cut it with scissors

Which of the following is a physical change?
a) cooking an egg
b) nail rusting
c) dissolving salt and water
d) bubbles when something is mixed with acid

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