element is most abundant in the human body and on the earth's cust?
ga are usually made from nortne als because non There's are good thors of hea b. False c. Majoe he following samples are electrical conductors aastic b. Gass c. Copper Sound just won a block of pure 24 Karat Gold You tave just prooxedan) a Element b. compound a sroperty does not belong to the group? 1 a. luster b. high melting point c, high electrical condance following are properties of ados escape a aste sour b. pH lower than 7 tuma blue tomus pace to red d. and shippery As the pH value increases, a acidity increases b. basidity increases c besity degreases d. none of these When the following household fems were arranged from most dio to most basic the order will be a tap water, mik, toothpaste, vinegar toothoeste mik, tap wete, vinegar b. mik, tap water, vinegar, toothpaste vinegar, te water, milk, toothpaste Which of the following satements is the concerning acids and becer? a a. adds and bases dort read with each other c.adds med with both make stronger acids b. b. acids mixed with beses neutra ze each other d. as me with beses more stronger bases Neutral solutions have a pH of. b. 7 0.14 d none of these The scientific method has five basic steps, plus one feedback ster Which of the following is not one of them? a a Make an observation c. Form a hypothesis or testable explanation b. b. Ask a question d Explain the prediction Which of the statements is a que tative observation? There are four ducklings swimming in the pond The mother duck, swimns with its duckings​