Match the element with its number of valence electrons. Column A 1. Boron : Boron 2. Carbon : Carbon 3. Fluorine : Fluorine 4. Sodium : Sodium Column B a. 4 b. 1 c. 3 d. 7

Which statement describes a chemical property of hydrogen gas

A 500 gram price of metal has a volume of 2.75. What is the density

Which definition of heat is most scientifically accurate? A. how hot or cold something is B. a measure of the thermal energy in matter C. the temperature of the thermal energy in an object D. the movement of thermal energy from one place to another

AgNo3+Cu->Cu (No3) 2+Ag

Which has more mass a kilogram of bricks or a kilogram of feathers explain

How can scientists study the composition of distant stars?

When an ionic compound such as sodium chloride (NaCl) is placed in water, the component atoms of the NaCl crystal dissociate into individual sodium ions (Na+) and chloride ions (Cl-). In contrast, the atoms of covalently bonded molecules (e. g.

From A complete stop a car reaches a velocity of 280 KM/S east in 7 seconds what is the rate of acceleration? A. 4 KM/S B. 7 KM/S C. 40 KM/S D. 70 KM/S

How sand is deposited along coastline

How do the reaction rates change as the system approaches equilibrium?