States of Matter
What are the two laws of matter?
1. Has to have mass
2. Has to have volume
True or false: Mass you use a graduated cylinder, volume you use a balance scale.
False, mass you use balance scale, volume you use a graduated cylinder.
True or false: Magnets attract magnetic materials, attract/repel other magnets, and have a north/south pole.
true
True or false: physical changes are irreversible and chemical changes are reversible.
false, physical changes are reversible and chemical changes are irreversible.
True or false: Fresh water is unlimited on earth.
False, fresh water is VERY LIMITED only 3% of fresh water is on earth, we must conserve it! (:
True or false: Particle or atom movement speed decreases as temperature increases.
false, it increases as temperature increases.
What are the four measurable properties of matter?
1. mass
2. volume
3. weight
4. temp
True or false: Magnets are contact force, they work by touching objects.
False, they are non-contract and work without touching objects.
When melting occurs, heat gain causes a solid to turn into a ______.
Liquid.
True or false: When water undergoes different phases, it losses it's mass.
False: water keeps its mass regardless of going through different changes!
List four properties of solids?
1. particles are tight
2. lower temps.
3. defined shape
4. slow movement
What are the four observable properties of matter?
1. color
2. texture
3. odor
4. magnetic attraction
What is a mixture? Explain if properties change and what happens to a mixture when it is dissolved.
Combines two more substances, properties do not change, and when dissolved it spreads out evenly (does not disappear).
True or false: heat flows from hotter materials to colder/cooler items.
True.
When water ______ changes increase or decrease, water changes from one state to another.
Temperature.
List the five properties of liquids?
1. particles are looser
2. warmer temps
3. defined volume
4. take shape of a container
5. moderate speed
True of false: H20 displacement is how you solve for volume.
True.
List 4 tools to help separate mixtures.
1. hands
2. magnets
3. sieves/filters
4. evaporation
True or false: Cooling causes particles to move faster, heating causes particles to move slower.
False, cooling causes particles to move SLOWER, heating causes particles to move FASTER.
List how we use water in a solid, liquid, and gas state according to your study guide.
1. ice backs
2. drinking, cooking, cleaning
3. steam from cooking
List the five properties of gas.
1. particles spread out
2. hot temps
3. spread out
4. fast speed
5. no defined shape or volume
What is the law of conservation?
mass doesn't change when broken, mixed, or re-arranged.
What are three ways to increase dissolving?
1. stir
2. heat
3. particle size (break apart so h20 breaks down object)
List the 6 signs of chemical change:
1. rust
2. odor
3. bubbling
4. rotting
5. burned
6. ash
Solid: has shape and volume
Liquid: shape by container, has volume
Gas: no shape, no volume.