Which type of mixture is composed of unevenly mixed substances?

Which statement about electronegativity is correct? A. Electronegativity decreases across a period. B. Electronegativity increases down a group. C. Metals generally have lower electronegativity values than non-metals. D.

Cindy left a small glass of salt water outside on her windowsill on a warm day. She remembered the glass a couple days later, but when she went to get it, she discovered that the water was gone and all that was left in the glass was a layer of salty

What are the building blocks of all matter

How many electrons would be found in the ion whose symbol is given below? N3-

Which statement best describes the structure of covalent network solids? A. They are giant structures held together by weak forces of attraction. B. All the atoms are covalently bonded to other atoms to form a lattice-like structure. C.

How are chemical methods of determining salinity dependent on the principle of constant proportions?

What does oxidation mean

Which is the correctly balanced chemical equation for the reaction of KOH and H2SO4?

Disintegration is the word geologists use for A. when a rock becomes moist. B. when rock is physically broken into smaller pieces. C. when rock is chemically broken into smaller pieces. D. when rock undergoes a rather large chemical change.

There us no sound in the vacuum of space Why? Answer all that are correct A) sound must travel through something that vibrates B) there is no energy in space C) there is no air to vibrate in the human eardrum