Complete the sentences to describe the structure of DNA.

The shape of the DNA molecule is called a double

The backbone of DNA is made of

molecules and phosphate molecules

The "rungs" of DNA are made of

What is the relationship between valence electrons and the number of bonds that can be formed?

Pick one or more of the following combinations to investigate in this activity. Vinegar and Baking Soda (NaHCO3) Room Temperature Water and Powdered Washing Soda (Na2CO3) Vinegar and Table Salt (NaCl) What chemical combination did you investigate?

The steps of the scientific method must be followed in order every time an experiment is carried out. Question 20 options: True False

Explain the principle behind a cool roof

Is boiling water exothermic or endothermic? What about condensing?

A gas made up of atoms escapes through a pinhole 0.155 times as fast as h2 gas. write the chemical formula of the gas.

Calculate the mass percent composition of lithium in Li3PO4. A) 26.75 % B) 17.98 % C) 30.72 % D) 55.27 % E) 20.82 %

What is the golden rule of lighting safety?

Select the correct answer. A man pours some hot coffee into a small cup from a large jug that contains enough coffee for several cups. Which statement correctly compares the coffee in the cup and in the jug? A.

Is sponge cake a heterogeneous mixture