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Chemistry Exam Study
Intro to Chem Unit 3-4
| Question | Answer |
|---|---|
| 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 |