8th grade exam - version 2

What do herbivores eat?

Plants

What do carnivores eat?

Animals

What do decomposers feed off and break down?

Dead/decaying organisms

What must a habitat provide for an organism to survive and reproduce?

Food, water, shelter, and living space Signup and view all the answers

Which of the following is NOT a requirement for an organism's habitat?

Abundance of predators Signup and view all the answers

Which of the following is an example of a biotic factor?

Grass Signup and view all the answers

What category do temperature and humidity fall under in the needs of living things?

Abiotic factors Signup and view all the answers

Which of the following is a characteristic of abiotic factors?

They are essential for photosynthesis Signup and view all the answers

What is the smallest particle of an element that has the properties of that element?

Atom Signup and view all the answers

Which of the following is an example of an element?

Na Signup and view all the answers

Which of the following is considered the simplest pure substance?

Element Signup and view all the answers

Pure substances consist of two or more different substances, not chemically joined together.

False Signup and view all the answers

A mixture consists only of one element or one compound.

False Signup and view all the answers

A pure substance has only one type of molecule in it.

True Signup and view all the answers

What is the study of matter?

Chemistry Signup and view all the answers

What does matter include?

Solids, liquids, and gases Signup and view all the answers

Which state of matter takes on the shape of the container it is in?

Liquids Signup and view all the answers

Which state of matter spreads to fill the space it is in?

Gases Signup and view all the answers

Which state of matter is hard to compress and holds its own shape?

Solids Signup and view all the answers

Which state of matter spreads to fill the space it is in?

Gases Signup and view all the answers

True or false: Solids and liquids can be compressed?

False Signup and view all the answers

True or false: Gases can be compressed?

True Signup and view all the answers

What makes particles move faster and break free of the forces holding them together?

Heat (energy) Signup and view all the answers

Which of the following determines whether a change is classified as physical or chemical?

The production of new substances Signup and view all the answers

What type of change occurs when ice-blocks melt in a drink?

Physical change Signup and view all the answers

Which state of matter has a definite shape and volume?

Solid Signup and view all the answers

What does a mixture consist of?

Two or more different substances not chemically joined together Signup and view all the answers

Homogeneous mixtures have components that cannot be distinguished from each other, appearing as one substance.

True Signup and view all the answers

Heterogeneous mixtures have all components of the mixture visible because they do not mix together.

True Signup and view all the answers

In homogeneous mixtures, particles are distributed evenly throughout. In heterogeneous mixtures, particles are not distributed evenly.

True Signup and view all the answers

What is the characteristic of homogeneous mixtures?

Components cannot be distinguished from each other Signup and view all the answers

What is the characteristic of heterogeneous mixtures?

All components are visible and do not mix together Signup and view all the answers

What is the primary function of a habitat for an organism?

To provide resources for survival and reproduction Signup and view all the answers

What is the main purpose of very long roots in plant adaptation?

To take in water Signup and view all the answers

In which type of interdependence do both organisms benefit from the relationship?

Mutualism Signup and view all the answers

Match the following dietary habits with their descriptions:

Herbivores = Only eat plants Carnivores = Only eat animals Omnivores = Eat both plants and animals Decomposers = Feed off and break down dead/decaying organisms Signup and view all the answers

8th grade exam - version 2

Questions and Answers

What do herbivores eat?

What do carnivores eat?

What do decomposers feed off and break down?

What must a habitat provide for an organism to survive and reproduce?

Which of the following is NOT a requirement for an organism's habitat?

Which of the following is an example of a biotic factor?

What category do temperature and humidity fall under in the needs of living things?

Which of the following is a characteristic of abiotic factors?

What is the smallest particle of an element that has the properties of that element?

Which of the following is an example of an element?

Which of the following is considered the simplest pure substance?

Pure substances consist of two or more different substances, not chemically joined together.

A mixture consists only of one element or one compound.

A pure substance has only one type of molecule in it.

What is the study of matter?

What does matter include?

Which state of matter takes on the shape of the container it is in?

Which state of matter spreads to fill the space it is in?

Which state of matter is hard to compress and holds its own shape?

Which state of matter spreads to fill the space it is in?

True or false: Solids and liquids can be compressed?

True or false: Gases can be compressed?

What makes particles move faster and break free of the forces holding them together?

Which of the following determines whether a change is classified as physical or chemical?

What type of change occurs when ice-blocks melt in a drink?

Which state of matter has a definite shape and volume?

What does a mixture consist of?

Homogeneous mixtures have components that cannot be distinguished from each other, appearing as one substance.

Heterogeneous mixtures have all components of the mixture visible because they do not mix together.

In homogeneous mixtures, particles are distributed evenly throughout. In heterogeneous mixtures, particles are not distributed evenly.

What is the characteristic of homogeneous mixtures?

What is the characteristic of heterogeneous mixtures?

What is the primary function of a habitat for an organism?

What is the main purpose of very long roots in plant adaptation?

In which type of interdependence do both organisms benefit from the relationship?

Match the following dietary habits with their descriptions:

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