If you forget to dry off a bread knife and when you washed it and reddish brown spots appeared on it would that be physical or chemical change

Which substances will make a salt when combined? Vinegar and antacids Soda and wine Soap and ammonia Fertilizer and detergent

The conversion of high quality stored energy to low quality thermal energy throughout the production of electricity from fossil fuels most exemplifies A the first law of thermodynamics B the law of conservation of energy C the second law of

This is the chemical formula for acetic acid (the chemical that gives the sharp taste to vinegar) : ch3co2h an analytical chemist has determined by measurements that there are 1.204 moles of carbon in a sample of acetic acid.

What does promoters in chemical reaction improve

What are the chemical properties of CO2

Which states of matter have no definite volume?

Which weighs more 10g of iron or 10g of water

Which pair of elements would combine to form an ionic compound? а b sodium and calcium sodium and chlorine carbon and oxygen carbon and sulfur с d

How many moles are there in 545g of Fe2O3?

How are magic minerals different from Felsic minerals? A. Mafic minerals contains lower levels of iron and magnesium. B. Mafic minerals contain more dark-colored, high-density minerals C.