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What important substance does Tums contain that helps lower the pH?
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What is a substance that helps chemical reactions?
A substance that helps chemical reactions is called a catalyst. It speeds up the rate of a reaction by providing an alternative pathway with lower activation energy. Catalysts are not consumed in the reaction and can be used repeatedly.
What is a solution conceded to be if it has a pH level lower that 7?
A pH reading lower than 7 indicates an acid substance - above 7 is a basic or alkaline substance.
Why does water generally move in the opposite direction of dissolved substances?
Diffusion is the process of a substance moving from an area of a higher concentration to a lower concentration. In this scenario the dissolved substance is the higher concentration and the water would go to an area with the lower concentration.
Tears contain antibacterial substances that destroy many bacteria?
Basic a level knowledge: Tears are a form of chemical barrier from infection. The enzyme lysozyme is found in tears which kills of some bacteria which helps prevent pathogens entering the body and causing infection. I hope this helps, I'm unsure how the enzyme kills the bacteria as I was only aware that enzymes are catalysts that lower the activation energy in a reaction. If any one knows I'll be very grateful. :) Xxx
When an obtained melting point range is broad what does it tell about the substance?
strong intermolecular forces attract the molecules
What does a tomato contain?
Tomato is very rich in vitamin C and lycopene, a valuable substance that helps decreasing bad cholesterol, helps lower high pression and protect men from prostate cancer.
What is a substance that helps chemical reactions?
A substance that helps chemical reactions is called a catalyst. It speeds up the rate of a reaction by providing an alternative pathway with lower activation energy. Catalysts are not consumed in the reaction and can be used repeatedly.
The temperature at which a substance freezes is lower than the temperature at which it melts?
Correct, the temperature at which a substance freezes is lower than the melting point.
What is a substance which helps make a chemical change happen but is not changed itself in the process is called?
Catalyst: a substance which speeds up a chemical change or enables the change to take place at a lower tempature, and is not changed or used up in the reaction.
What will happen if the ignition temperature is lower than the room temperature?
If the ignition temperature of a substance is lower than the room temperature where it is, then that substance ignites.
Why is it that dried food sample can contain lower numbers of microorganisms?
Why is it that dried food sample can contain lower numbers of microorganisms
Why does a icebreg float?
water is the only substance on earth where its density is HIGHER when liquid, and LOWER when solid. a substance will float on top of another if its density is lower than the other substance. so because the ice has a LOWER density it will float on top of the water
What is the effect of soluble volatile substance on the boiling point of a water solution?
A soluble volatile substance will lower the boiling point of a solution. The volatile substance will boil at a lower temperature than the water component, thus causing the solution to boil at a lower temperature.
What is a solution conceded to be if it has a pH level lower that 7?
A pH reading lower than 7 indicates an acid substance - above 7 is a basic or alkaline substance.
When a lower boiling substance put at room temperature the substance is in solid state or liquid state?
It depends exactly what the substance is and exactly what it's boiling point is. The term 'lower' could mean 1 centigrade lower than the surface temperature of the sun. So it is impossible to answer this question.
What can you infer about the density of a substance if a block of that substance floats in water?
because the density is lower than water.
What can you infer about the density of substance if a block of that substance floats in water?
because the density is lower than water.
