Questions in chemistry

Questions in chemistry

[Sagot para sa’yo] 4. Scientists continued to make discoveries about elements long after Mendeleev first produced his table. Explain how later discoveries provided evidence to support Mendeleevs organisation of the elements.

[Sagot para sa’yo] A pure substance containing only one kind of _______

[Sagot para sa’yo] 1 Identify the element/atom shown in the diagram 2 Is the atom an isotope or not? Explain.

[Sagot para sa’yo] In each of the following situations, identify the method of heat transfer taking place (conduction, convection, radiation). Write your answer on the space provided. 1. Hot coffee is stirred with a spoon, the spoon gets hot due to _. 2. A chair is placed several feet from a fire in a fireplace. The fireplace has a glass screen. The side of the chair facing the fireplace gets warm because of_. 3. A certain type of decorative lamp contains colored liquids. These liq

[Sagot para sa’yo] Why does the sand and grain stay behind on the filterpaper

[Sagot para sa’yo] In which jar did the salt dissolve the slowest

[Sagot para sa’yo] Activity 4.1.2 A. Tell Me Provide the answers for the following questions. You may use different materials as a reference for the articulation of your points. 1. What is a good fuel? 2. If you could use any source of energy for heating your food, which one would you use and why? 3. Why are we looking at alternate sources of energy? 4. What are the disadvantages of fossil fuels? 5. Can any source of energy be pollution-free? Why or why not? Paki sagot po ng maayos please kailangan po to talaga

[Sagot para sa’yo] Write T if the statement is correct and F if the statement is incorrect. 1. Moth balls undergo sublimation. 2. Water droplets outside a cold glass of water are examples of freezing. 3. Waste from used battery is considered as organic waste. 4. Air is a homogeneous mixture. 5. Colloids are classified as heterogeneous mixtures. 6. A carbonated drink is a heterogeneous mixture. 7. Distillation can be used to separate water from oil. Filtration is used to separate solid from liquid. 9. The reverse o

[Sagot para sa’yo] 1. A pure substance containing only one kind of ___. An element _be separated into simpler materials (except during nuclear reactions). Over 100 existing elements are listed and classified on the _. Compounds: 2. A pure substance containing two or more kinds of _. The atoms are combined in some way. Often they come together to form groups of atoms called molecules. Compounds ____be separated by physical means. Separating a compound requires a chemical reac

[Sagot para sa’yo] Ano spilling ng metcury

« Prev
1
...
32
33
34
35
36
...
63
Next »