Vocabulary
Anything that has mass and takes up space.
The study of how atoms and molecules interact with each other.
What is chemistry?
This type of substance has multiple components that are chemically combined in fixed proportions.
What is a compound?
Explain how to separate sand from water. What is the process called?
If a building is 174 m tall, give its height in ft (1m = 3.28 ft).
What is 570.72 ft?
A mixture in which the particles of a substance are mixed enough to settle.
What is a suspension?
Are atoms and molecules the same? Explain.
No, molecules are made from atoms.
What is true?
The physical response that identifies a colloid. What type of evidence does it provide? Explain
What is the Tyndall effect and it provides indirect evidence?
The Tyndall effect is the scattering of light that happens when a light is directed at a colloid.
(True/False) Magnets can be used to separate iron objects from a mixture.
What is true?
The smallest unit into which an element can be divided and still maintain the properties of the element.
What is an atom?
What is distillation?
Explain how elements and compounds are similar.
Both are pure substances so they are chemically combined and are the same throughout the whole substance.
A combination of substances in which the particles are not uniformly distributed.
What is a heterogeneous mixture?
If the length of a wall is 48.75 ft, what is its length in centimeters (1 in = 2.54 cm)?
What is 1,485.9 cm?
A particle consisting of two or more atoms chemically tied together.
What is a molecule?
The reason we classify matter.
What is being able to study creation and talk about it in detail with others?
What is a compound?
(True/False) Filter paper can be used to separate salt from water.
What is false?
(True/False) The particles in a suspension are large enough to see.
What is true?
Describe a suspension.
A suspension is a mixture that has visible, suspended particles that will eventually settle. The particles are large enough to block light and be separated by using a filter.
List 3 benefits and drawbacks of scientific pursuits.
Drawbacks - possible climate change, ozone depletion, chemical pollution, radioactive waste, and chemicals that harm God's creation.
The study of matter, energy, motion and forces.
What is physics?
The chemical composition must be determined. If the components are chemically combined, the substance is a compound. If the components are not chemically combined, the substance is a homogenous mixture.
Describe the separation process the miners used during the California gold rush.
The miners took metal pans and washed the mixture of river sediments. The smooth metal pans had slightly angled sides and as the miners swirled the water, the lighter particles washed over the sides, leaving the heavier particles, including the gold pieces, in the bottom. After the heavy pieces dried, miners used a magnet to remove some of the iron-rich sand and then picked out the gold from what was left in the pan.