Answer: Heat and Light.
Explanation: When the wood is burned, it combines with oxygen in air to partake in a combustion reaction which is exothermic. It coverts the chemical energy in the wood and release them as light and heat. Stored potential energy (in the form of chemical energy) in the log is released due to heating by other excited atoms. This chemical reaction is called combustion and requires oxygen. Combustion changes the potential chemical energy into kinetic energy in the form of heat.
Answer:
An ion is thousands of times more massive than an electron.
Explanation:
positive ions can be considered to be fixed during the electrons’ oscillations as an ion is thousands of times more massive than an electron and will not respond quickly due to large inertia.
miscible cause the clear blue liquid is a homogeneous mixture
Tantalum (Ta), Osmium (Os) and Rhodium (Rh) are metals.
<u>Explanation</u>:
- Metals are good conductors of heat and electricity and they can be hammered into sheets (malleable).Mainly most of them are solids. Ta, Os and Rh are all metals with a same platinum group.
- Tantalum (Ta) with a atomic number 73 is a lustrous transition metal which is highly corrosive resistant. It is mainly used in making electronic equipment.
- Rhodium (Rh) is a chemical element with atomic number 45 is a rare, silvery white,hard and corrosive resistant metal. Osmium (Os) with a atomic number 76 is a hard, brittle bluish-white transition metal.
Answer:
The "graduated cylinder" is measuring a "volume of water" in "milliliters".
Option: D
Explanation:
Measuring of "liquid" in "milliliters" we use "graduated cylinder". This represents the "volume of the water" or the "liquid". The "graduated cylinder" is labelled with the dimensions in the "milliliters". Measuring with "graduated cylinder" is some what difficult because of the "meniscus", this "meniscus" is the "curvature" of the surface of the water in the "graduated cylinder". The only problem is "meniscus" is attached to the edges of the cylinder but not in the middle of the cylinder. While looking at the cylinder the "meniscus" is not straight, hence the person should keep the "graduated cylinder" at his eye level.