Science-1
To show an idea
establish
What evidence do we look for in a chemical change?
Release of heat or light, change in color, formation of gas bubbles, formation of a solid, and/or a new smell.
What is a gas?
Matter that does not have a definite shape or volume.
What happens to the properties when a substance goes through a chemical change?
The particles rearrange to form a new substance.
What is a chemical change?
A process in which a new kind of matter forms.
A mixture in which the substances are evenly spread out and do not settle to the bottom of the container.
Solution
How is a solid different from a liquid?
A solid is different from a liquid berceuse a liquid takes the shape of the container it is in and a solid has a definite shape.
What is it called when salt is dissolved in water?
Solution
What happens to the particles of salt when it is dissolved in water?
The particles of both substance both become evenly spread apart.
What is a liquid?
A substance that has a definite volume but does not have a definite shape.
The scientific law that in any physical or chemical change, the total mass of the matter does not change.
Conservation of Matter
How are a solid and a liquid different from a gas?
A solid and a liquid have a definite volume and gasses do not have a definite volume or mass.
What is differentiate?
To identify the difference between two or more objects.
What two things happen when a chemical change has occured?
A new substance is formed and the new substance has different properties than the original substance.
What is a solid?
Matter with a definite shape and volume.
The process in which one or more substances change into one or more different substances.
Chemical Reaction
What are examples of chemical changes? (3)
-Bread is toasted
-Cooking an egg
-Rust is forming on metal
What is the solvent and what is the solute in a salt and water mixture?
Solvent- water
Solute- salt
Which processes are examples of physical changes? (3)
-Ripping a piece of paper
-Cracking an egg
-Freezing water
What is a mixture?
A substance where different materials are put together but each keeps its own properties.
A part
Component
What happens to the properties when a substance goes through a physical change?
The properties of the substance stays the same.
A change in some properties of matter that does not change what the substance is made of.
Physical change
What happens to the particles when they go through a chemical change?
A B + C D
A D + C B or C B + A D
What is support?
To back up.