SBAC Test Prep - Week #4

Iron oxides, such as rust, form when iron metal reacts with oxygen in the air. What are the chemical symbols for the two elements found in iron oxide?

• I and O

• Ir and O

• Fe and O

• Pb and O

In which region of the table would nonmetals be found?

• 1

• 2

• 3

• 4

Which of the following best describes an atom?

• protons and electrons grouped together in a random pattern

• protons and electrons grouped together in an alternating pattern

• a core of protons and neutrons surrounded by electrons

• a core of electrons and neutrons surrounded by protons

Within a substance, atoms that collide frequently and move independently of one another are most likely in a

• liquid

• solid

• gas

• crystal

Which of the following forms of energy is released or absorbed in most chemical reactions?

• light energy

• electrical energy

• sound energy

• heat energy

As a sample of water turns to ice,

• new molecules are formed.

• the mass of the sample is increased.

• the arrangement of the molecules changes.

• energy is absorbed by the molecules.

An object composed mainly of ice is orbiting the Sun in an elliptical path. This object is most likely

• a planet.

• an asteroid.

• a meteor.

• a comet.

Which of the following elements is best able to combine with itself and hydrogen (H) to form large molecules?

• sodium (Na)

• lithium (Li)

• sulfur (S)

• carbon (C)

Which of the following compounds is most likely to be part of living organisms?

• C6H12O6

• BF3

• MoCl2

• CsI

The table below shows the pH and reaction to litmus of four body fluids. Refer to the table to answer the following question: These data indicate that gastric juice is

• very acidic.

• very basic.

• positively charged.

• negatively charged.