Is adding magnesium metal to hydrochloric acid a physical or chemical change? Chemical Changes Observation Example of a Chemical Change A gas is evolved. When magnesium reacts with hydrochloric acid a new substance, hydrogen gas, is produced. You can observe bubbles of gas forming on the magnesium and rising to the surface of the acid. […]
What does products of combustion mean?
What does products of combustion mean? Products of combustion are the end product when fuels, such as hydrocarbons, remain after the process of combustion. Thus, these are released and scattered into the atmosphere. Combustion is referred to as an exothermic reaction involving an oxidant and a fuel along with heat production. What are the toxic […]
What two rocks make fire?
What two rocks make fire? A fire striker or firesteel when hit by a hard, glassy stone such as quartz, jasper, agate or flint cleaves small, hot, oxidizing metal particles that can ignite tinder. The steel should be high carbon, non-alloyed, and hardened. Similarly, two pieces of iron pyrite or marcasite when struck together can […]
What is the example of positive work?
What is the example of positive work? When force and displacement are in the same direction, the work performed on an object is said to be positive work. Example: When a body moves on the horizontal surface, force and displacement act in the forward path. The work is done in this case known as Positive […]
What is the relationship between voltage drops and current in a resistive AC circuit?
What is the relationship between voltage drops and current in a resistive AC circuit? For resistors in AC circuits the direction of the current flowing through them has no effect on the behaviour of the resistor so will rise and fall as the voltage rises and falls. The current and voltage reach maximum, fall through […]
Where does the sugar go when dissolved in water?
Where does the sugar go when dissolved in water? When sugar is dissolved in water, the particles of sugar gets between the spaces of the particles of water and fills that space. We notice that the particles of water have space between them and that is why the sugar particles gets into those spaces resulting […]
What does necking mean sexually?
What does necking mean sexually? noun. Informal. kissing, caressing, and other sexual activity between partners that does not involve stimulation of the genitals or sexual intercourse. Architecture. a molding or group of moldings between the projecting part of a capital of a column and the shaft. Are brittle materials tough? Brittle materials exhibit tensile S-S […]
What are three controls in a car that produce acceleration?
What are three controls in a car that produce acceleration? Three controls on a car can change its velocity – the accelerator pedal, brake pedal, and steering wheel. Velocity changes if either speed or direction change. Acceleration is the concept that tells you how quickly your velocity changes. What happens when air struggles to fill […]
Which dam produces the most power in the world?
Which dam produces the most power in the world? Three Gorges Dam Which is the biggest hydro power plant in India? Koyna Hydroelectric Project What are the biggest dams in the world? List of largest dams Rank Name Installed capacity [MW] 1 Tarbela Dam 4,888 2 Fort Peck Dam 185 3 Atatürk Dam 2,400 4 […]
How do I get my license back after DUI in Florida?
How do I get my license back after DUI in Florida? Getting Your License Back After a Florida DUI Conviction Pay the required reinstatement and administrative fees; Complete a DUI school and substance abuse treatment program, if it was ordered by the judge in your case; Present proof of insurance as required by law; and, […]