What organisms appeared on Earth First?

a). gastropods

b). horn corals

c). brachiopods

d). crinoids

Which of the following describes the contribution of Eratosthenes? A. discovery of the geocentric theory B. discovery of a mathematical formula to relate the sides of a right triangle C.

a cylinder of argon gas contains 50.0 l of ar at 18.4 atm and 127 Celsuis. How many grams are in the cylinder?

metals are malleable because the free flowing blank act as a lubricant and allow the blank to blank over each other

Which ranks these materials by the attraction between their atoms from the weakest to the strongest? a. oxygen gas, liquid water, liquid honey, solid iron ore b. liquid water, liquid honey, oxygen gas, solid iron ore c.

Explain how galvanizing protects a metal from corrosion.

The last column of the periodic table contains the noble gases, elements that do not easily form chemical bonds.

In the laboratory how could you determine if a solid as an ionic or metallic bond

Which object (s) formed last in our solar system? the Sun the solar nebula the inner planets the planetesimals

How many grams of sodium are represented by the symbol Na?

Drag the missing word into place I saw a shooting star. My teacher said that the streak of light was a (n) asteroid atmosphere meteor