D425 intro to Chemistry Test Questions with
100% Correct Solutions
Chemistry - ANSWER the study of matter and its interactions
Matter - ANSWER anything that has mass and takes up physical space.
Atom - ANSWER the smallest units of matter that retain the properties of that matter.
Mass - ANSWER A measure of the amount of matter that an object contains.
Volume - ANSWER The amount of physical space a substance or object occupies.
pure substance - ANSWER A type of matter with a constant composition.
subatomic particles - ANSWER electron, protons, and neutrons.
Elements - ANSWER atoms of the same type grouped together.
What is the simplest substance? - ANSWER elements
periodic table - ANSWER displays all known element according to similarities between
elements' properties.
What makes up all of the material in the universe? - ANSWER Matter
, What's an example of a pure substances? - ANSWER Aluminum
What's a compound? - ANSWER A substance made up of 2 or more different elements
joined together.
What's an example of a compound? - ANSWER H2O, table salt
What is a mixture? - ANSWER A combination of 2 or more pure substances that retains
its own identity & properties.
What are the 2 types of Mixtures? - ANSWER homogeneous and heterogeneous
mixtures
What's an example of a mixture? - ANSWER Salt water
Can matter be a mixture or pure substance? - ANSWER Yes, it can be both.
What is a homogeneous mixture? - ANSWER a mixture that is the same throughout
What is a heterogeneous mixture? - ANSWER a mixture that is not uniform throughout
What is the difference between homogeneous mixture and a pure substance? -
ANSWER They both are uniformed, but the composition of pure substance is always the
same and in homogenous mixture each sample may vary.
what's an example of a homogeneous mixture? - ANSWER air and salt water
100% Correct Solutions
Chemistry - ANSWER the study of matter and its interactions
Matter - ANSWER anything that has mass and takes up physical space.
Atom - ANSWER the smallest units of matter that retain the properties of that matter.
Mass - ANSWER A measure of the amount of matter that an object contains.
Volume - ANSWER The amount of physical space a substance or object occupies.
pure substance - ANSWER A type of matter with a constant composition.
subatomic particles - ANSWER electron, protons, and neutrons.
Elements - ANSWER atoms of the same type grouped together.
What is the simplest substance? - ANSWER elements
periodic table - ANSWER displays all known element according to similarities between
elements' properties.
What makes up all of the material in the universe? - ANSWER Matter
, What's an example of a pure substances? - ANSWER Aluminum
What's a compound? - ANSWER A substance made up of 2 or more different elements
joined together.
What's an example of a compound? - ANSWER H2O, table salt
What is a mixture? - ANSWER A combination of 2 or more pure substances that retains
its own identity & properties.
What are the 2 types of Mixtures? - ANSWER homogeneous and heterogeneous
mixtures
What's an example of a mixture? - ANSWER Salt water
Can matter be a mixture or pure substance? - ANSWER Yes, it can be both.
What is a homogeneous mixture? - ANSWER a mixture that is the same throughout
What is a heterogeneous mixture? - ANSWER a mixture that is not uniform throughout
What is the difference between homogeneous mixture and a pure substance? -
ANSWER They both are uniformed, but the composition of pure substance is always the
same and in homogenous mixture each sample may vary.
what's an example of a homogeneous mixture? - ANSWER air and salt water
