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WorksheetsCharacteristics of Elements and Compounds
Total questions: 10
Worksheet time: 5mins
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.
What elements make up carbon dioxide?
carbon and carbon
carbon and oxide
carbon and oxygen
carbon and hydrogen
What is used to represent elements' names?
chemicals
chemical symbols
drawing
image
Pure substance that are made up of two or more molecules are called
atoms
compounds
elements
mixtures
Carbon is considered an element while carbon dioxide is considered a compound. This is because carbon dioxide is –
a gas at room temperature.
made of two different elements.
given off by green plants.
useful in photosynthesis
Which of the following is the most abundant element in the Earth’s crust?
Calcium
Iron
Oxygen
Potassium
Which of the following is correctly matched?
Gold: Element: Silver: Compound
Oxygen: Element: Water: Compound
Sugar: Element: Salt: Compound
Water: Element: Hydrogen: Compound
A new substance with unique chemical and physical properties formed when two or more elements are chemically bonded during a chemical reaction.
Compound
Periodic Table
Matter
Volume
1. Sodium is a silvery solid that reacts violently with water and chlorine. When they combine to form the compound sodium chloride known as salt, there is a fundamental change in the properties. Salt is often added to our food when cooking and it is safe to eat. Which of the following statements supports the idea presented?
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.
