Properties and Changes
A characteristic of matter
Property
Changing from solid to liquid
Melting
If you heat a substance what will happen to its molecules?
They will separate
Natural Resource
The space an object takes up.
Volume
This is the ability (characteristic) to undergo a reaction.
Chemical property
Changing from liquid to gas
vaporization/boiling
This has a definite shape and volume.
solid
Christmas ornaments are not found in nature, which makes them a what?
Synthetic material/resource
What is the equation for finding density?
D = m / v
I am not edible, but I am shiny, solid at room temperature, can be flattened, can be melted, and a distinct metallic color. What am I?
Gold
Changing from gas to liquid
Condensation
What state of matter occurs when you super-heat a gas?
Plasma
What are some negative results of burning fossil fuels?
Pollution, greenhouse gases, running out of resources
If an object projects half-way out of the water, then what is its density?
0.5 g/ml
This is a change that does NOT change the identity of a substance.
Physical change
Liquid to a gas at the surface of a liquid.
Evaporation
Where in the water cycle does condensation be observed?
Fog, clouds, mist
Why are solar, wind, and water-based energy called "renewable"?
They don't run out (infinite supply)
If an object has a mass 200 grams and takes up a volume of 10 ml, will it float or sink? What is the density?
20 g/ml -- It will sink.
What are the 5 main indicators of a physical change?
Changing from solid to gas.
Sublimation
What is any form of water FALLING called?
Precipitation
Give an example of conservation of resources in your daily life?
Recycling, Reducing, Re-using
Why can an object with a density higher than water (like an aluminum boat) still float?
Buoyancy