Q2 Week 1 - Honors Review Quizizz

Both elements and compounds are pure substances.

• Agree

• Disagree

Answer explanation

The statement in the question is correct. Both elements and compounds are indeed pure substances. An element is a substance made up of the same type of atoms, while a compound is a substance made up of two or more different types of atoms chemically bonded together. Both are considered pure because they consist of only one type of particle.

Two or more different elements chemically combine to form compounds.

• Agree

• Disagree

Answer explanation

The statement in the question is correct. When two or more different elements chemically combine, they form compounds. This is a fundamental concept in chemistry. Therefore, the correct choice is 'Agree'.

Compounds have properties different from the elements that make it up.

• Agree

• Disagree

Answer explanation

The statement in the question is correct. Compounds are formed when two or more elements chemically combine. The resulting compound has properties that are different from the individual elements that make it up. This is a fundamental concept in chemistry.

Represented by an unique chemical symbol

• Elements

• Compounds

• Both

Answer explanation

The question asks what is represented by a unique chemical symbol. The correct answer is 'Elements'. This is because each element in the periodic table has a unique chemical symbol that distinguishes it from all other elements. Compounds, on the other hand, are combinations of elements and do not have their own unique symbols.

This picture represents which of the following?

• element

• compound

Answer explanation

The question asked to identify what the picture represents. The correct answer is 'compound'. A compound is a substance formed when two or more chemical elements are chemically bonded together. The picture must have depicted this, hence 'compound' is the correct choice.

This picture represents which of the following?

• element

• compound

Answer explanation

The question asked for the identification of a picture. The correct answer is 'element'. This indicates that the picture represents an 'element', not a 'compound'. An element is a substance that cannot be broken down into simpler substances by chemical means, while a compound is a substance formed when two or more chemical elements are chemically bonded together.

This picture represents which of the following?

• element

• compound

Answer explanation

The question asks about what the picture represents. The correct answer is 'compound'. A compound is a substance formed when two or more chemical elements are chemically bonded together. The picture must have depicted such a scenario, hence 'compound' is the correct choice.

What is the chemical symbol for Chlorine?

• Cl

• Ch

• Cr

• Ce

Answer explanation

The chemical symbol for Chlorine is 'Cl'. This is based on the question asking for the chemical symbol of Chlorine. Among the given options, 'Cl' is the correct choice as it is the universally accepted symbol for Chlorine in the periodic table of elements.

Which of the following is a chemical compound?

• Co

•  CO₂

• Mg

• Al

Answer explanation

A chemical compound is a substance formed from two or more elements chemically bonded together. In the given question, CO2 (carbon dioxide) is the correct choice as it is a compound formed by the combination of carbon and oxygen atoms. The other options, Co (cobalt), Mg (magnesium), and Al (aluminum), are all elements and not compounds.

What is the chemical symbol for Potassium?

• Po

• K

• H

• P

Answer explanation

The chemical symbol for Potassium is 'K'. This symbol is derived from the Latin word 'kalium'. Among the given options, 'K' is the correct choice representing Potassium, while the other options represent different elements or are incorrect symbols.