on level ECM

Multiple Choice

Which of the following statements best describes an element?

• A substance that can be broken down chemically into simpler substances.

• A pure substance made up of only one type of atom.

• A mixture of two or more substances.

• A compound formed by combining two elements.

Multiple Choice

Which substance is composed of only one type of atom?

• water

• gold

• salt

• sugar

Multiple Choice

This picture represents.........

• Element
• Molecule
• Compound
• Mixture

Multiple Choice

Contains only one kind of atom.

• Element
• Compund
• Mixture

Multiple Choice

Elements can be broken down into simpler substances. 

• false 
• true 
• sometimes 

Multiple Choice

Which of the following is an example of an element?

• Helium

• Water

• Carbon Dioxide

• Salt Water

Multiple Select

Which of the following are examples of compounds?

• Carbon Dioxide

• Copper

• Water

• Glucose

Multiple Choice

This picture represents which of the following?

• element
• compound
• mixture

Multiple Choice

Which of the following is a compound?

• Oxygen

• Water (H₂O)

• Gold

Multiple Choice

Is sugar (C₁₂H₂₂O₁₁) an element or a compound?

• Element
• Compound

Multiple Choice

What is the main difference between a mixture and a compound?

• Mixtures can be separated physically, compounds cannot

• Mixtures are chemically bonded, compounds are not

• Compounds can be separated by filtration, mixtures cannot

• Compounds always contain water

Multiple Select

Which of the following are examples of mixtures? (check all that apply)

• Cement

• Salt Water

• Soil

• Glucose

Multiple Choice

Which particle has a positive charge?

• electron
• orbital
• proton
• neutron

Multiple Choice

Choose the particle that has no charge.

• nucleus
• neutron
• proton
• electron

Multiple Choice

This picture represents which of the following?

• element
• compound
• mixture

Multiple Choice

Is this an example of an element or compound?

• element

• compound

Multiple Choice

This picture represents which of the following?

• element

• compound

Multiple Choice

This picture represents which of the following?

• element

• compound

Multiple Choice

What is gold? It is found on the Periodic Table with the symbol, Au.

• element

• compound

Multiple Choice

This picture represents which of the following?

• element

• compound

Multiple Choice

Which of the pictures shows ONLY a compound?

• left

• middle

• right

• all of them

Multiple Choice

What type of mixture is this

• Hetergeneous

• homogenous

Multiple Choice

What kind of mixture is shown in the picture?

• Homogeneous

• Heterogeneous

Multiple Choice

• element
• compound
• mixture of elements
• mixture of compounds and elements

Multiple Choice

This diagram represents...

• An element

• A molecule

• A compound

• A mixture of elements and compounds

Multiple Choice

What kind of mixture is shown in the picture?

• Homogeneous

• Heterogeneous

Multiple Choice

In this diagram, X represents...

• A compound

• A mixture

• An atom

• An element

Multiple Select

In this diagram, Y represents... (must pick multiple answers)

• An element

• A molecule

• A compound

• A mixture

Multiple Choice

What is a mixture?

• When two or more substances are combined physically, but not chemically.

• When two or more compounds are combined chemically, but not physically.

• When two or more atoms are chemically combined, but not physically combined.

• When two or more substances are neither physically nor chemically combined.

Multiple Choice

Is air a homogeneous or heterogeneous mixture?

• Homogeneous

• Heterogeneous