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When you have a chemical change is the mass of what you start with less equal or greater than what you end with?
Wiki User
∙ 11y ago
If the equation is balanced, the mass will be the same on each side of the equation.
Matter cannot be created or destroyed.
Wiki User
∙ 11y ago
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Is 0.795 greater than 0.15?
To compare two decimals, start by comparing the digits with the highest place-value. In this case, the first digit after the decimal point. Whichever is greater, belongs to the greater number. If these digits are equal (for example, when you compare 0.15 and 0.173), compare the second digit - and continue until you find a difference.
Is 0.42 kg greater than 478 g?
Let's start by doing a little word analysis. "kg" is the abbreviation for kilogram. "Kilo" means 1000, so a "kilogram" is 1000 grams. 0.42 kg is equal to 0.42*1000 grams, which is equal to 420 grams. To answer the question now, 0.42 kg is LESS than 478 g.
Does equal sign proceeds a formula?
If you mean in Excel, yes: you must always start a formula with an equal sign.
Can anyone let me know the similarities between the average and instantaneous rates of change?
The average rate of change is the rate of change between the start and the finish, not simply at one point in time.Suppose you want to get to your friend's house in a hurry. You start running but then get out of breath and walk the rest of the way. The average rate of change in your distance from your home will be the total distance to your friend's house divided by the total time taken to get there. The instantaneous rate, when you are running, will be a measure of how much distance that you are covering per one moment of time then. This will be greater than the instantaneous rate when you are walking.
Mass mass problems?
Mass-mass problems can be solved in various ways. You should start by writing a balanced equation for chemical reaction involved and eventually change the mass into moles which will facilitate the comparison and allow you to calculate the number of moles required.
The substances used to start a chemical change are called?
Catalysts
What is the difference between matter changes and chemical changes?
Matter changes is to make a matter for example water to change form, and when it becomes steam it means you achieved a matter change.Everything has molecules that move so to change the matter you must make the molecules start moving in a different way. You achieved that with heat as you know heat has this property. Chemical change is to mix two chemicals that will form a new product with equal mass, and that's the chemical change ;o)
Is drawing cooper into wire a chemical change?
No. You start with copper, and when you are finished it is still copper, so there is no chemical change. It's a physical change. You changed the shape and moved some atoms around.
What helps start up a chemical change but does not itself take part in the reaction?
Catalyst
What happens when chemical?
When atoms of two different elements join together (or combine) to make molecules of a compound, scientists say that a Chemical Change or Chemical Reaction has taken place. I you look at the substances you start off with and the substance you get after the change, they are often different.
Does the consumption of food involve chemical or physical change?
Chewing the food is a physical change, but once the food mixes with saliva it becomes a chemical change. Digesting it is definitely a chemical change, because the stomache acids mix with the food and viola a chemical change.
Is wax solidifying a physical or chemical change?
Yes becasue when the atoms inside the wax start to change, they all form and become a solid. this is what is now called replacement.
Is forming compound physical or chemical change?
The forming of the carbon elemental form is a chemical change. The deposition on the flask is likely a physical change, although it may not be any change at all (solid being the STP phase of carbon).
Is solid a physical or chemical change?
Neither. A physical change is changing something's tangible properties, such as shape or state of matter (solid, liquid, or gas), while a chemical change is turning something into something else entirely. For example, water freezing into ice is a physical change, but cake batter turning into cake is a chemical change. So, if it's the same thing that you start with as a liquid or gas and it simply becomes a solid, it's a physical change. If it becomes something else entirely, it's a chemical change. I hope that helped.
Is it a physical change or chemical change when scab forms over an open cut?
It's a physical change. The scab is formed by platelets which are suspended in the person's blood. They clump together to form a solid 'plug' to stop bleeding.
Is milk souring a chemical or physical change or both?
Well just to start off nothing can ever be a physical and chemical change it has to be one or the other.. and the best way to know which one it is is a physical change doesnt change the substance and a chemical change will change the substance into something else. So milk going sour would be chemical because it isnt regular milk anymore its sour milk. but if it was something like evaporating water then it would be physical because its still water its just in the gas state. -Hope that helps(:
How do you convert angular rotation into force?
You create a purely 'rotatory force' or torque when you have two forces of equal magnitude but opposite direction pushing or pulling on an object. The greater the forces the greater the torque, and the greater the perpendicular distances between the two forces the greater the torque. Note that because the forces are equal and opposite, the object will not accelerate in any direction. But because there is a perpendicular distance between the forces the object will start to rotate.
