College Prep -

Who is credited with the invention of the modern periodic table?

Mendeleev

what element is nonmetal

sulfur

One of the essential minerals in the human body is salt. How much salt (NaCl) is in the average adult human body?

250 grams

what is the chemical formula for water

H2O

What do you call an atom that has more protons than electrons?

a cation

what is the most common isotope of carbon

protium

If you fill a glass to the brim with ice water and the ice melts, what will happen?

the water level will drop slightly as it melts

The symbol Sb stands for stibnum or stibnite. What is the modern name of this element?

antimony

You can't live without iron. Where in the body is most of the iron located?

blood

Organic chemistry is the study of the compounds that make up living organisms. All organic molecules contain:

carbon and hydrogen

Noble gases are inert because they have completed outer electron shells. Which of these elements isn't a noble gas?

chlorine

DNA codes for proteins, which are the building blocks of organisms. What is the most abundant protein in the human body?

collagen

Three of the most common states of matter are solids, liquids, and gases. A liquid has:

defined volume, not shape

Water-based liquids can be described as acidic, neutral, or basic, with respect to pH. Which of these describes milk?

slightly acidic

AG stand for?

Silver