States of Matter
What state of matter has a definite shape and volume?
Solid
What property describes how much space an object takes up?
Volume
Is melting ice a physical or chemical change?
Physical Change
Is Chocolate Milk a solution or a mixture?
Solution
What is the tiny particle that makes up matter?
Atoms
Which state of matter takes the shape of its container but keeps the same volume?
What property tells how much matter is in an object?
Mass
Is burning wood a physical or chemical change?
Chemical Change
What is a mixture?
Two or more substances combined without forming a new substance.
What are the three main parts of an atom?
Protons, Neutrons, and Electrons
How are the particles in a gas different from the particles in a solid?
Gas is loosley packed, Solids are tightly packed.
A rock and a sponge are the same size. Which property could help you tell them apart?
Mass, Density, Bouyancy
Why is cutting paper a physical change?
It is changing shape and size, but it is still paper.
What is the difference between a solution and a mixture?
A solution is a mixture in which one substance dissolves evenly into another. A mixture can contain substances that remain visibly separate.
Which part of an atom has a negative charge?
Electron
What happens to the particles when water changes from a liquid to a gas?
They become less packed and spread out quickly.
A material is shiny, hard, and can conduct electricity. Name one property you could use to describe it.
Luster, Hardness, Conductivity
What evidence might show that a chemical change occurred?
Color Change, Gas/Bubbles, Temperature Change, Light, Odor
Give an example of a mixture that can be separated by filtering.
Sand and water
Which part of an atom contains protons and neutrons?
Nucleus
Explain how the movement and spacing of particles differ in solids, liquids, and gases.
Solid- Tight
Liquid- Less Tight
Gas- Widely spread out
Why are physical properties useful when identifying an unknown material?
Physical properties can be observed or measured without changing what the material is. They can help us identify and compare materials.
Explain the difference between a physical change and a chemical change.
Physical- form, Size, Shape, no new substance
Chemical- Creates new substance.
Explain how to filter sand and water, or water and salt.
First filter the mixture to remove the sand. Then evaporate the water, leaving the salt behind.
Explain how protons, neutrons, and electrons are arranged in an atom.
Protons and neutrons are found in the nucleus. Electrons move around the nucleus.