Pre-Test Physical Science

Which of the following elements is not produced during stellar nucleosynthesis?

• lithium

• neon

• oxygen

• iron

What is formed when a neutron and a proton fused during the big bang nucleosynthesis?

• electron

• deuterium

• neutrino

• positron

What refers to the relative ability of a bonded atom to attract toward itself a shared electron paired?

• valence electrons

• molecular shape

• electronegativity

• dipole

The following terms are not used when dealing with liquid substances EXCEPT,

• soluble

• dipole

• miscible

• polar bond

Which of the following influence the chemical and physical properties of substances?

• Molecular size, shape, and bond strength.

• Molecular shape and its polarity.

• Molecular size and bond strength.

• Molecular sizes and shapes, as well as polarity and bond strength.

Dispersion forces are also called London forces. Which of the following German physicists postulated their existence?

• Albert Einstein

• Philipp Lenard

• Fritz London

• Hermann Von Helmholtz

When you fry an egg which level of protein structure will most likely remain intact or sustain lesser damage?

• primary structure

• Secondary structure

• Tertiary structure

• Quaternary structure

Which IMFA is present in all substances?

• Dipole-dipole interaction

• H-bonding

• Induced dipole-induced dipole interaction

• Ion-dipole interaction

Which of the following will hasten the rate of reaction?

• adding a catalyst

• diluting the reactants

• decreasing the surface area of a reactant

• decreasing the temperature of the reaction

What will be observed in general in an endothermic reaction?

• formation of gas

• emission of light

• decrease in temperature of the system

• increase in temperature of the system