Elements and Compounds Quiz

Label in correct place

There are [blank_start]118[blank_end] known elements. They are displayed in a table called the [blank_start]periodic[blank_end] table. The elements are listed from [blank_start]lightest[blank_end] to [blank_start]heaviest[blank_end] and according to their [blank_start]properties[blank_end]

The symbols of elements follow [blank_start]different[blank_end] patterns. For some elements, the symbol is the first letter of its name. These elements include [blank_start]oxygen[blank_end] and [blank_start]neon[blank_end]. For some elements, the symbol is two letters derived from the beginning or part of its name. The first letter is always [blank_start]upper case[blank_end] and the second letter is always [blank_start]lower case[blank_end]. These elements include [blank_start]magnesium[blank_end] and [blank_start]chlorine[blank_end]. For other elements, the symbol comes from the name of the element in another language. These elements include [blank_start]sodium[blank_end] and [blank_start]tungsten[blank_end].

Which could be a correct symbol for a chemical element?

Atoms are the building blocks of matter.

Elements consist of one or two types of atoms.

There are three ways that atoms can be arranged in elements

The periodic table is an ordered listing of elements from lightest to heaviest.

Metallic elements are lustrous, malleable and poor conductors of heat.

Non-metallic elements are brittle, dull and poor conductors of electricity.

The chemical symbols of elements always start with the first letter of the element’s name

Molecular elements only ever contain two atoms in a molecule.

Which elements exist as molecular elements?

Match the element symbols with the diagrams of their structures.

Select the element that is most likely to be lustrous and a good conductor of electricity.

An element has the following properties: poor conductor of electricity exists as individual atoms poor conductor of heat. What type of element is this? This type of element is [blank_start]monatomic[blank_end]

H2O - [blank_start]______[blank_end] C6H12O6 - [blank_start]_____[blank_end] CO2 - [blank_start]______[blank_end] NaCl - [blank_start]_____[blank_end] SiO2 - [blank_start]____[blank_end] O2- [blank_start]____[blank_end] CO- [blank_start]____[blank_end]

Compounds are substances made up of more than [blank_start]one type of atom[blank_end]. The properties of compounds are usually [blank_start]different from[blank_end] the properties of the elements that make them up. Some compounds, such as water and sugar, are made up of [blank_start]molecules[blank_end]. Other compounds, such as table salt and beach sand, are [blank_start]a lattice[blank_end].

If a substance contains only one type of atom, it is [blank_start]______[blank_end] If a substance contains more than one type of atom, it may be a compound or [blank_start]______[blank_end] If a substance contains clusters of different types of atoms, it is [blank_start]_____[blank_end] If a substance contains atoms very strongly bonded to each other and in a regular arrangement, it is a [blank_start]____[blank_end] If a substance contains more than one element or compound, it is a [blank_start]______[blank_end] An alloy is an example of [blank_start]____[blank_end]

Complete the following with the element name and number of atoms in a molecule that has the formula C3H7Cl H Element name - [blank_start]_______[blank_end] Number of molecules in atom - [blank_start]______[blank_end] C Element name - [blank_start]_______[blank_end] Number of molecules in atom - [blank_start]______[blank_end] Cl Element name - [blank_start]_______[blank_end] Number of molecules in atom - [blank_start]______[blank_end]