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Physical Science 10th > Final test > Flashcards

Final test Flashcards

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1
Q

What are the building blocks of all matter?

A

B. Atoms

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2
Q

Which of the following conversion factors would you use to change 18 kilometers to meters?

A

A. 100m/1km

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3
Q

On the celsius scale, at what temperature does water boil?

A

C. 100 degrees

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4
Q

If the relationship between the manipulated variable and the responding variable is a direct proportion what will a line graph of this relationship look like?

A

A. straight line

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5
Q

Which of the following are pure substances?

A

B. Compounds

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6
Q

If a material contains 3 elements joined in a fixed proportion it is a

A

D. Compound

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7
Q

Which of the following is a characteristic of a mixture

A

A. Has varying properties

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8
Q

Which of the following is a heterogeneous mixture?

A

C. A jar of mixed nuts

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9
Q

A mixture can be classified as a solution, suspension, or colloid based on the

A

B. Size of its largest particles

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10
Q

Which of the following has the highest viscosity?

A

A. Corn Syrup

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11
Q

A substance has a melting point of 0ºC and a boiling point of 100ºC. The substance is most likely

A

A. Water

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12
Q

A material that is malleable and conducts electricity is most likely

A

C. A metal

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13
Q

What physical properties of nylon and leather make them good materials to use for shoelaces?

A

B. Durability and flexibility

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14
Q

Which of the following materials is useful for making molds because it has a low melting point?

A

D. Wax

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15
Q

When a physical change in a sample occurs, which of the following does NOT change?

A

D. Composition

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16
Q

Which of the following is NOT a clue that a chemical change has occurred?

A

D. Change in shape

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17
Q

Matter that has a definite volume but no definite shape is a

A

A. Liquid

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18
Q

Forces of attraction limit the motion of particles most in

A

B. A solid

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19
Q

What is the result of a force distributed over an area?

A

C. Pressure

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20
Q

Raising the temperature of a gas will increase its pressure if the volume of the gas

A

C. and the number of particles are constant

21
Q

The phase change occurs when water changes from a solid to a liquid?

A

Melting

22
Q

The phase change that is reverse of condensation is

A

Vaporization

23
Q

Which statement about subatomic particles is true?

A

D. An electron has far less mass than either a proton or neutron.

24
Q

Which of the following is unique for any given element?

A

C. Number of protons

25
Q

Suppose an atom has amass number of 35 which statement is true beyond any doubt

A

D. the number of protons in the nucleus does not equal the number of neutrons.

26
Q

Mendeleev changed the known chemical elements in a table according to the increasing

A

D. Mass

27
Q

Which general statement does NOT apply to metals?

A

C. Most Metals are brittle

28
Q

The column on the far left of the periodic table contains the

A

A. Most Reactive metals

29
Q

Which of the following Group 1A elements is the most reactive?

A

A. Cs

30
Q

which of the following groups contain three elements with stable electron configurations?

A

D. Helium, Xenon, neon

31
Q

Study the electron dot diagram for lithium carbon fluoride and neon choose the statement that correctly identifies the most stable of elements

A

D. Neon is most stable element because its highest occupied energy level is filled.

32
Q

The SI unit of mass is the ____.

A

Kilogram

33
Q

A measurement Must include but a number and a_____.

A

Unit

34
Q

Pure substances are either _____ or ____.

A

Elements; Compounds

35
Q

A material used for electrical wiring would need to have good ____.

A

Conductivity

36
Q

When water boils from that molecules have enough _____ to overcome the attraction of neighboring molecules

A

Kinetic energy

37
Q

Water boils when its vapor pressure becomes equal to __ Pressure.

A

Atmospheric

38
Q

What type of graph would be the best to use to compare the levels of lead contamination in six water wells?

A

Bar graph

39
Q

Based on the information which substance would be solid at 10.0 C

A

Acetic acid, and gold

40
Q

It’s on the data in figure 2-2 is Mixture C a homogeneous or heterogeneous mixture?

A

It is heterogeneous because it can be filtrated and scattered by light

41
Q

Which of the mixtures is a colloid?

A

A. It does scatter light but cannot be separated or filtered

42
Q

Which of the mixtures is a solution

A

B. It does not scatter light and does not separate

43
Q

rank the mixtures in order of the size of the particles starting with the smallest particles

A

BAC

44
Q

What period and group is an atom of this element in

A

Period-3 group-7

45
Q

Find density

A

Density= Mass/Volume

46
Q

AB+C=AC+B is an example of what type of reaction?

A

Single deplacement

47
Q

2 H2O= H2+O2 is an example of what type of reaction?

A

Decomposition

48
Q

A+B=AB is an example of what type of reaction?

A

Synthesis

Physical Science 10th (6 decks)

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