Unit 1 Matter 6th Grade Study Guide

Front

What happens to objects that are more dense than a fluid?

Back

They will sink in the fluid.

Front

What is a pure substance? Give an example.

Back

A pure substance is a material made of only one type of particle. Example: Gold (Au) is a pure substance.

Front

What does it mean if an object suspends in a liquid?

Back

It means the object’s density is equal to the liquid’s density.

Front

What happens to objects that are less dense than a fluid?

Back

They will float on the fluid.

Front

Fill in the blank: The kinetic energy of particles is lowest in ______ and highest in ______.

Back

solids; gases

Front

Define density.

Back

Density is the mass of an object divided by its volume.

Front

What is the relationship between density and buoyancy?

Back

An object will float if it is less dense than the fluid, and sink if it is more dense.

Front

What is a fluid?

Back

A fluid is a substance that can flow, such as liquids and gases.

Front

What is the difference between a solid, liquid, and gas in terms of particle arrangement?

Back

In solids, particles are tightly packed; in liquids, they are close but can move; in gases, they are far apart and move freely.

Front

What is an example of a mixture?

Back

Salad is an example of a mixture, as it contains different substances combined together.