Characteristics of Elements and Compounds

Front

Which of the following describes an element?

• It is the simplest substance.
• It is composed of two or more types of atoms.
• It can be separated through a chemical process.
• It can be broken down into other types of substance.

Back

It is the simplest substance.

Front

What elements make up carbon dioxide?

Back

carbon and oxygen

Front

What is used to represent elements' names?

Back

chemical symbols

Front

Pure substances that are made up of two or more molecules are called

Back

compounds

Front

Why is carbon dioxide considered a compound?

Back

made of two different elements.

Front

Which is the most abundant element in the Earth’s crust? Options: Calcium, Iron, Oxygen, Potassium

Back

Oxygen

Front

Which of the following is correctly matched?
- Gold: Element: Silver: Compound
- Oxygen: Element: Water: Compound
- Sugar: Element: Salt: Compound
- Water: Element: Hydrogen: Compound

Back

Oxygen: Element: Water: Compound

Front

A new substance with unique chemical and physical properties formed when two or more elements are chemically bonded during a chemical reaction.

Back

Compound

Front

How many letters typically represent an element on the Periodic Table of Elements?

Back

1 or 2

Front

What happens to the properties of elements when they form compounds? Options: True to all elements, they have the properties after they are combined. True to some compounds, it maintains the properties of the elements that makes them up. True to all compounds, they no longer have the properties of the elements that makes them up. True in all elements, it maintains its properties even after it combines with other elements.

Back

True to all compounds, they no longer have the properties of the elements that makes them up.