| Question | Answer |
| 1. What is the common name for ‘Group 2’ in the periodic table? | Alkaline Earth Metals
|
2. Draw the Lewis dot diagram for the elements Calcium & Argon | A
| 3. Water has a boiling point of 100C. Is this a chemical or physical property? | Physical
| 4. Identify whether the following are chemical or physical changes: (A) Hand sanitizer evaporating on your hand (B) Milk going sour (C) Mixing flour, salt and sugar together in a bowl. | (A) physical (B) Chemical (C) Physical
| 5. Are the following molecules, compounds, or both: (A) F2 (B) NaOH | (A) Molecule (B) Both
| 6. Provide the name of the following compounds, are they ionic or molecular? (A) NaBr (B) OCl2 | (A) Sodium Bromide - IONIC (B) Oxygen Dichloride- MOLECULAR
| 7. Provide the name of the following compounds, are they ionic or molecular? (A) P2O5 (B) Mn(NO3)7 | (A) Diphosphorus pentoxide - MOLECULAR (B) manganese (VII) nitrate- IONIC
| 8. Write the formula and name the following elements form (A) Sulfur & Magnesium (B) Nitrate & Calcium | (A) Magnesium sulfide (MgS) (B) calcium nitrate (Ca(NO3)2)
| 9. In your own words, state the law of conservation of mass. | The mass of the reactants is the same as the mass of the products/Number of atoms in the reactants are the same as the number of atoms in the products.
| 10. List all 7 diatomic elements: | H,O,Br,F,I,N,Cl
| 11. Balance the following equation: ____NH4NO2 → ____N2 + ____H2O | NH4NO2 → 2 + 2 2O
| | (A) Potassium + Chlorine → Potassium chloride : 2K + Cl2 → 2KCl - SYNTHESIS
| 13. Write the word and balanced equation for when sodium metal reacts with iron (II) chloride. What type of reaction is this? | Sodium + iron (II) chloride → Sodium chloride + Iron
| 14. Write the word and balanced equation for when sodium phosphate and calcium chloride react. What type of reaction is this? | Sodium phosphate + calcium chloride → calcium phosphate + sodium chloride 2Na3PO4 + 3CaCl2 → 6NaCl + Ca3(PO4)2 - DOUBLE DISPLACEMENT
| 15. True or false: Acids are generally bitter and slippery, whereas bases are sour and corrosive | False
| 16. Name the following, identify whether it is an acid or a base: (A) Co(OH)2 (B) H2CO3 | (A) Cobalt (II) hydroxide - BASE (B) Hydrocyanic acid
| 17. Provide formulas for the following, identify whether it is an acid or a base: (A) hydroselenic acid (B) Nitrous acid | (A) H2S - ACID (B) HNO2- ACID
| 18. Write the word and balanced chemical equation for when Ca(OH)2 and H3PO4 react. What type of reaction is this? | Calcium hydroxide + Phosphoric acid → water + calcium phosphate |
