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Classification of Matter
Properties of Matter
Changes in Matter
Are you smarter than yo momma?
Are you smarter than me?
100
This type of matter has definite properties and fixed composition
What is a pure substance?
100
A characteristic of matter than can be directly observed without changing the composition of the substance is called
What is a physical property?
100
A change in a substance in which the atoms are not rearranged and the matter either absorbs or releases energy is a ________
What is a Physical change?
100
When salt is separated from water by evaporating the water, explain what type of change is occurring.
What is a physical change, because the water is only turning to a gas but its atomic arrangement has not changed?
100
This states that the mass of the reactants in a reaction must be equal to the mass of the products in a reaction.
What is the Law of Conservation of Mass?
200
Matter in which the properties of the substances that make it are different than the properties of the substances when they combine is called
What is a compound?
200
A substance's ability to burn in the presence of oxygen is known as ________ and is a ______ property.
What is flammability and chemical?
200
Making cake batter is a ______ change.
What is a physical change?
200
Explain why physical changes can be easily reversed but chemical changes cannot.
What is during a physical change the composition of the substance is not altered so there is no new substance being formed.
200
A jar contains 30 mL of glycerin (mass=37.8g) and a 60 mL of corn syrup (mass=82.8g). Which liquid is the top layer? Explain
What is you have to find the densities of both liquids. The lighter density, which in this case is corn syrup (.72 g/mL), will be on top because it is less dense.
300
This type of matter only contains one type of atom.
What is an element?
300
This physical property is a derived quantity that tells you how close or far apart the atoms of a substance are.
What is density?
300
This happens when the atoms are rearranged and a new substance is created.
What is a chemical change?
300
River deltas, which form as silt and mud, will settle. This is evidence that the river is a _______? Explain
What is a suspension. The particles are large enough that they stay suspended for only a brief period before they begin to sink back to the bottom.
300
How could we separate a group of unknown substances based on our knowledge of density?
What is the fact that water has a density of 1.0 g/mL. We could place the liquids (or solids) in a graduated cylinder and see how they stack up. The one lowest density would be at the top and the one with the highest density would be at the bottom.
400
Substances such as jello and fog are classified as _____ in which the particles are larger but stay suspended throughout the material.
What is a colloid?
400
When we made rockets Friday, the ability of baking soda to react with vinegar was a _______ property.
What is a chemical property?
400
When you dissolve sugar into tea, this is a ______ change.
What is physical change?
400
A yellow powder is heated in a beaker. You notice a gas is produced while the solid substance turns brown. This type of change would be a _____ change.
What is a chemical change. The atoms are rearranged to form the new substance. You also see signs that a chemical change is occurring by gas produced and color change.
400
Explain how we would find the volume of a small piece of irregularly shaped copper.
What is use water displacement?
500
This type of matter can have various compositions and the properties of the substances that make it do not change.
What is a mixture?
500
A characteristic of matter that can only be observed when the substance changes into something new is known as a _________ property.
What is a chemical property?
500
When you light a candle this type of change is occurring
What is a chemical change?
500
Explain the energy transformations as water changes from one state to another (solid, liquid, gas).
What is energy must be absorbed when water goes from solid to liquid to gas and energy must be released when water goes from a gas to liquid to solid.
500
A brick is more dense than a sponge because of this.
What is density is the amount of mass something has in relation to its volume. Basically describes how many particles an object has for its size. A brick has many more particles than a sponge, which is mainly air.