Vocabulary
This term refers to anything that has mass and takes up space.
What is matter?
This property describes how easily a material can be scratched or dented.
What is hardness?
This state of matter has a definite shape and volume - its particles are packed tightly together.
What is a solid?
The process by which warm water vapor in the air cools and changes back into liquid droplets - like on the outside of a cold glass.
What is condensation?
Matter is made of particles that are...
a) large enough to see
b) too small to see without special tools
c) not real
d) the same in all states
What is b) too small to see without special tools?
This term refers to a type of matter that has a definite composition and specific properties - like water or salt.
What is a substance?
When a substance can dissolve in liquid, like sugar in water, it has this property.
What is solubility?
This state of matter takes the shape of its container but keeps the same volume.
What is a liquid?
When liquid water on Earth's surface gains heat energy and turns into water vapor, it goes through this process.
What is evaporation?
When ice melts, the total mass of water...
a) increases
b) decreases
c) stays the same
d) disappears
What is c) stays the same?
When two or more substances are combined but not chemically conjoined, they form this.
What is a mixture?
This property compares how much matter is packed into a certain amount of space - it's why a rock sinks and a leaf floats.
What is density?
In this state of matter, particles move freely and spread apart to fill the entire container.
What is a gas?
When you put mentos into 2 liters of diet coke, this kind of reaction takes place.
What is a physical reaction?
When particles are heated, they generally...
a) move slower
b) stay the same
c) change shape
d) move faster and spread out
What is d) move faster and spread out?
This describes the physical form of matter - solid, liquid, or gas.
What are states of matter?
This property tells us if heat or electricity an move through a material easily.
What is conductivity?
This scientific law states that matter cannot be created or destroyed, only changed.
What is the Law of Conservation of Matter?
This change occurs when you mix milk and vinegar, the liquid separates and forms solid curds.
What is a chemical change?
Which of these is NOT a physical property of matter?
a) flammability
b) magnetism
c) density
d) color
What is a) flammability?
The tiniest piece of matter, too small to see, that all substances are made of.
What is a particle?
Compass needles work because Earth itself has this property, which causes them to point north.
What is magnetism?
This state of matter is made of charged particles, found in lightning and stars.
What is plasma?
The process by which a solid changes straight into a gas without becoming a liquid first - like dry ice "disappearing" into fog.
What is sublimation?
Which observations show that a chemical change occurred?
a) water boils
b) rust forms on iron
c) salt dissolves in water
d) trail mix is made
What is b) rust forms on iron?