Which of the following consists of positive and negative ions bound together and held in place in a crystalline solid?

A. Covalent bonds

B. Ionic compounds

C. Molecular compounds

D. Molecules

How are solids, liquids, and gases similar? How are solids, liquids, and gases similar?

A chemical formula written above or below the yield sign indicates: a. that a gas is formed. b. that the substance is used as a catalyst. c. that heat must be supplied. d. a reversible reaction.

The temperature is 5°C below zero. Which integer represents this temperature? +5 -5

How can you tell one elements from another?

What are the covalent bonds that form between atoms of different electronegativities called? a. pure bonds b. ionic bonds c. polar bonds d. uneven bonds

What are some examples of density?

A 0.110 mol sample of an ideal gas occupies 3.50l. what is the volume of 0.250 moles of this gas at the same temperature and pressure?

Give an example of an industry i n which Chemistry is used and explain how it is.

How much fencing material does fiona need in meters?

Write the full ground-state electron configuration for each element. (a) s: