Elements and Compounds Test 2017-2018

Which of the following is a compound? A. Water B. Oxygen C. Chlorine D. Aluminum

A. Water

Which of the following is the best description of an element? A. A substance that cannot be broken down into simpler substances B. A naturally occurring mineral made of more than one substances C. A small particle made with a specific CHEMICAL composition D. A collection of atoms that have different abilities when joined together

A. A substance that cannot be broken down into simpler substances

While elements and compounds are related, they are different. Unlike elements, compounds - A. consists of only one type of atom B. are the smallest form of a particle C. exist only as pure substances D. are made of at least two types of matter

D. are made of at least two types of matter

Which of the following is a compound made up of exactly two elements? A. O2 B. H2O C. 2N2 D. C6H12O6

B. H2O

What is the CHEMICAL symbol for magnesium? A. 12 B. Mg C. Magnesium D. 24.31

B. Mg

Carbon is considered an element while carbon dioxide is considered a compound. This is because carbon dioxide is - A. a gas at room temperature. B. made of two different elements. C. given off by green plants. D. useful to human beings.

B. made of two different elements.

The chemical equation shown below represents a reaction that produces fuel for certain CARS. CO + H2O → CO2 + H2 Which substance represented in this equation is classified as an element? A. CO B. H2O C. CO2 D. H2

D. H2

How many elements are in the compound Fe2O3?

2

How many of these substances are an example of an element? O, NaCl, Au, Ne

3

Provided is a list of five different substances. How many of these substances are elements? NaOH, Cu, H2O, N2, H2

3

Look at the given compound. Be3Al2(SiO3)6 How many different elements are in the compound?

4

The smallest particle of any particular type of matter is known by which of the following terms? A. Element B. Chemical C. Atom D. Compound

C. Atom

Students are placing different soil samples in front of a fan to see which kind of soil is MOVED most easily by wind. What piece of safety equipment would be most important during this investigation? A. Fire extinguisher B. Gloves C. Goggles D. First-aid kit

C. Goggles

Students are given a hot plate and a beaker of water and are asked to HEAT the water and measure its temperature. What other tools and safety equipment do they need for this experiment? A. Spring scale and gloves B. Compass and apron C. Thermometer and goggles D. Hand lens and goggles

C. Thermometer and goggles

"Na" would be an example of an elements' what? A. formula B. name C. symbol D. compound

C. symbol