9 - Chemistry Vocabulary (1.1-1.2) - Oct 27

Which of the following is an example of matter?

• heat

• X rays

• light

• water

Classify the following: Salt (NaCl)

• compound

• mixture

• element

• solution

What is the definition of the term 'pure substance' in chemistry?

• A pure substance is a type of matter that can change its composition and properties. It cannot be physically separated.

• A pure substance is a type of matter that can be physically separated into its components.

• A pure substance is a type of matter that is a mixture of different elements which can be physically separated.

• A pure substance is a type of matter that has a fixed composition and distinct properties. It cannot be physically separated.

Which of the following is an example of an element?

• sun

• oxygen

• water

• carbon dioxide

What is a chemical reaction?

• A chemical reaction is a process that leads to the formation of new elements.

• A chemical reaction is a process that leads to the destruction of chemical substances.

• A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

• A chemical reaction is a process that leads to the separation of chemical substances.

What is the definition of a group in the periodic table?

• A column of elements with similar chemical properties.

• A row of elements with similar physical properties.

• A column of elements with different chemical properties.

• A row of elements with similar chemical properties.

What is the definition of a period in the periodic table?

• A period in the periodic table is a vertical column of elements.

• A period in the periodic table is a group of elements with similar properties.

• A period in the periodic table is a diagonal row of elements.

• A period in the periodic table is a horizontal row of elements.

Which of the following is an example of a metal?

• hydrogen

• Copper

• NaCl

• Plastic

Which of the following is an example of a non-metal?

• iron

• copper

• oxygen

• gold

Which of the following is an example of a semi-metal?

• gold

• carbon

• oxygen

• silicon