Types of Matter

What is an element?

• A mixture of different substances

• A compound of two different elements

• A type of molecule

• A substance composed of only one type of atom

Which of the following is a compound?

• Oxygen

• Helium

• Water

• Nitrogen

Tags

NGSS.MS-PS1-1

What distinguishes a homogeneous mixture?

• It has multiple layers

• It cannot be separated into its components

• It is uniform throughout

• It contains only one substance

What is the symbol for Iron?

• I

• In

• Fe

• Ir

How can compounds be separated?

• By physical processes

• By filtration

• By decantation

• By chemical reactions

What is the atomic number indicative of?

• The number of protons

• The mass of the atom

• The number of neutrons

• The number of electrons

What is true about elements on the periodic table?

• They are mixtures of different substances

• They are all elements

• They can be both elements and compounds

• They are all compounds

What does a subscript in a chemical formula indicate?

• The number of that type of atom

• The charge of the atom

• The number of molecules

• The atomic number of the element

What is a heterogeneous mixture?

• A pure substance

• A mixture that is not uniform throughout

• A mixture of only liquids

• A mixture that is uniform throughout

Which of the following is not a physical process for separating mixtures?

• Decantation

• Electrolysis

• Filtration

• Distillation