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Chemistry Exam Study

Intro to Chem Unit 3-4

A certain substance contains all boron atoms. What type of substance is it? Element
Sodium chloride has chemical and physical properties that are half way between the properties of sodium and chlorine. True or False? (False. Sodium chloride is a new substance with properties that are different from those of the constituent elements.)
How many sulfur atoms are in a molecule of S(8)? 8
What type of substance is ice that is made from pure water? Compound
What is the symbol for sulfur? S
Fill in the blank: Be, Mg, Ca, Sr, Ba and Ra are in the same periodic _______. Group
How many sulfur atoms are in a molecule of SO2 ? 1
Give the symbol for sodium. Na
Lithium (Li) and Potassium (K) react with water to generate hydrogen gas. What gas would you expect sodium (Na) to generate when it is mixed with water? Hydrogen Gas.
Photons of visible light have greater energy than x-rays. True or False? False.
What type of orbital has a "dumbell" shape? p
What type of orbital has a spherical shape? s
Which orbital is largest? 4s
Which orbital is smallest? 1s
Convert the following number to scientific notation: 0.000567 5.67*10-4
Which has the least mass? electron
Created by: Flick09