| A | B |
|---|
| The three states of matter are? | solids, liquids, gases |
| What is matter made up of? | atoms and molecules |
| Describe the particles of matter. | always moving & bumping into each other |
| The atoms and molecules in solids area a... | definite shape & volume, can be hard or soft |
| The particles in a solid are? | close together & vibrating |
| Liquids have a definite ___ but no definite ___. | definite volume, no definite shape |
| Liquids take the shape of? | its container or a puddle |
| The particles in a liquid are....? | close together, but move freely, can flow, can be thick or thin |
| The particles in gases have no definite ___ and no definite _____. | shape or volume |
| The particles in a gas ___ ___ to match their container. | spread out |
| Gas particles are very excited and fly apart or move at...? | high speeds |
| Solid Looks Like |  |
| Liquid Looks Like |  |
| Gas Looks Like |  |
| Everything on earth is made up of? | matter |
| Matter can be... | As big as a rocket ship, as huge as a mountain, or as tiny as a grain of sand |
| Different objects have... | Different amounts of molecules and atoms |
| The kind of molecules and atoms in an object makes some thing... | shiny, heavy and hard, or light and soft |
| The amount of matter in an object is its... | mass |
| Using a __ __, you can tell that a golf ball has more mass than a balloon. | balance scale |
| The amount of space an object takes up is its.... | volume |
| An objects weight is dependent on... | gravity |
| If your weight on Earth is 120 pounds, what would you weigh on the moon? (Hint: The moon has 1/6 the gravity of Earth) | 20 lbs. |
| What is density? | A measure of how tightly packed matter is |
| The upward push on an object by liquid or gas is known as.... | buoyancy |
| Why does a golf ball sink when placed in water? | More dense than the water/material inside the golf ball is packed tighter than the water |
| How does a submarine use the principles of density/buoyancy to sink or float? | It lets water into its ballast tanks to sink (more dense)/lets water out of ballast tanks to float (less dense) |
| Which is more dense (helium or water) | water |
| Which is more dense (water or gold)? | gold |
| What temperature Fahrenheit does water boil at? | 212 degrees |
| What temperature Celsius does water boil? | 100 degrees |
| What temperature Fahrenheit does water freeze? | 32 degrees |
| What temperature Celsius does water freeze? | 0 degrees |
| Melting point is defined as... | The point at which a solid changes to a liquid. |
| When changing from a liquid to a gas the molecules become ___ and move ___. | Excited and faster |
| Why do substances expand (get bigger)?? | They get hotter. |
| Evaporation is an example of a ___ turinng to a ___? | Liquid to gas |
| When an object contracts (gets smaller), what is happening? | Because it is cold |
| Engineers design bridges and concrete sidewalks with "expansion joints?" | So they won't "break" when they expand and contract in hot and cold weather. |
| How do you know that a paper clip is more dense than a basketball? | It will sink. |
| How do you know that a basketball is less dense than a paper clip? | It will float. |
| Which has the largest volume (baseball or snowflake)? | baseball |
| Which has the smallest volume (pencil or car)? | pencil |
