Physical Science: Atoms And Elements Flashcards

1
Q

What are the types of reproductive technology?

A

Types include drugs, insemination, in-vitro fertilization, and surrogacy.

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2
Q

What is the difference between physical and chemical properties?

A

Physical properties can be observed without changing the substance, while chemical properties involve a change in the substance.

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3
Q

What is the difference between physical and chemical changes?

A

Physical changes do not alter the chemical composition, while chemical changes result in new substances.

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4
Q

What is the difference between a theory and a law?

A

A theory explains why something happens, while a law describes what happens.

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5
Q

What is the purpose of using models in science?

A

Models help to visualize and understand complex concepts.

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6
Q

What is Matter?

A

Matter is anything that has mass and takes up space.

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7
Q

What is the difference between a pure substance and a mixture?

A

A pure substance has a uniform composition, while a mixture contains two or more substances that retain their individual properties.

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8
Q

What is the difference between elements and compounds?

A

Elements are pure substances made of one type of atom, while compounds are made of two or more different types of atoms chemically bonded.

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9
Q

What are the three subatomic particles?

A

Protons (positive charge, located in the nucleus), neutrons (neutral charge, located in the nucleus), and electrons (negative charge, located in orbitals around the nucleus).

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10
Q

What is a compound?

A

A compound is a substance formed when two or more elements are chemically bonded together.

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11
Q

What is the Periodic Table?

A

The Periodic Table organizes elements based on their atomic number and properties.

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12
Q

What is electricity?

A

Electricity is the flow of electric charge.

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13
Q

What is the difference between static and current electricity?

A

Static electricity is the buildup of charge, while current electricity is the flow of charge.

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14
Q

What are the four parts of a circuit?

A

The four parts are a power source, conductors, a load, and a switch.

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15
Q

What is the difference between alternating and direct current?

A

Alternating current (AC) changes direction periodically, while direct current (DC) flows in one direction.

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16
Q

What is the relationship between voltage, current, and resistance?

A

Voltage is the potential difference, current is the flow of charge, and resistance is the opposition to current.

17
Q

What is a nebula?

A

A nebula is a giant cloud of dust and gas in space, often the birthplace of stars.

18
Q

What are the differences between asteroids, comets, meteoroids, meteors, and meteorites?

A

Asteroids are rocky bodies, comets are icy bodies, meteoroids are small particles, meteors are meteoroids that enter the atmosphere, and meteorites are meteors that reach the ground.

19
Q

What are the differences and similarities between planets and dwarf planets?

A

Both orbit the sun, but dwarf planets do not clear their orbital path of other debris, while planets do.