43. What type of chemical reaction took place in the chemical equation in item no. 42? C. single displacement D. synthesis A. decomposition B. double displacement
PART 1: CHECK POINT A. INSTRUCTION Modified True or False. Write true if the statement is correct. If false, underline the word or phrase that makes the statement incorrect and write the correct word or phrase on the blank space. 1. The Pacific Ring of Fire is a 40 000 kilometer, ring-shaped basin that covers a collection of plate edges.__________2. Volcanic eruption is the extrusion of lava and gas from the volcanic vent. 3. Caldera is formed when a volcano collapses into itself.__________4. Taal Volcano is an example of a volcanic caldera and is considered as one of the most active volcanoes in the country..__________ 5. A volcano can be considered inactive if it has not erupted for 5 000 years...__________ 6. The Bulusan Volcano is recorded to have had the latest volcanic eruption in the country.__________7. Mayon Volcano is a stratovolcano found in Naga Cify.__________8. As recorded, Mt. Pinatubo has the greatest number of volcanic eruptions with 51 recorded eruptions.__________ 9. Mt. Hibok-Hibok is an inactive volcano found in Camiguin Island.__________10. Based on the recent data of PHIVOLCS, there are 47 craters in Taal Volcano,__________