Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

LICEO S.Y. 2022-2023 > General Chemistry - 1st Session Examination > Flashcards

General Chemistry - 1st Session Examination Flashcards

1
Q

type of substance that is made up of one type of atom

A

element

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

a type of substance that is made up of two or more types of atoms

A

compound

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

have particles that are very close to each other in a highly organized arrangement, which is why they have a fixed volume and shape

A

solid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

have particles that are slightly farther apart from each other but are close enough to allow them to flow and have a definite volume.

A

liquid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

have particles that are very far apart from each other, which is why they expand and assume their container’s shape and volume.

A

gas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

The phase change from solid to liquid is called

A

melting or fusion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

The phase change from liquid to gas is called

A

boiling, evaporation, vaporization

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

The phase change from solid to gas is called

A

sublimation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

is a form of matter whose composition and properties are constant within a given sample or among different samples.

A

pure substance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Which of the following refers to a form of matter whose components may be separated from each other by physical means?

A

mixture

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Which of the following phase changes does not happen when matter is heated?

A

condensation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Which term refers to a charged particle or a set of charged particles?

A

ion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Who proposed that matter is made up of tiny indivisible particles?

A

democritus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which statement(s) adheres to the principles of the particulate nature of matter?

1 - Particles of matter are in constant and random motion.

2 - Particles of matter are steady and in fixed positions.

3 - Particles of matter are held or repelled by forces.

A

1 and 3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

general properties of matter?

A

density, mass, and volume

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Which of the following statements is true about mass and weight?

A

mass is constant while weight varries

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

physical properties that do not depend on the amount of matter

ex. density, specific gravity

A

intensive properties

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

physical properties that depend on the amount of matter

ex. mass and volume

A

extensive properties

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Which properties should be considered in designing electrical components?

1 - high conductivity

2 - high ductility

3 - low reactivity

4 - low melting point

A

1, 2, and 3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Which pair of physical properties and units of measurement is incorrect?

1 - mass: kg

2 - density: g/cm³

3 - volume: cm

4 - specific gravity: N

A

3 and 4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the simplest form of a substance?

A

element

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

statement that correctly differentiates pure substances from mixtures

A

Pure substances have fixed or definite composition while mixtures do not have

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Element X is ductile, malleable, and is a good conductor of heat and electricity. What is the classification of element X?

A

metal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is the best way to determine whether a given mixture is a colloid?

A

letting a beam of light pass through it and see if the light is scattered

25
Q

Which of the following statement(s) is true about compounds?

1 Compounds are pure substances.
2Compounds have the same properties as the elements that comprise it.
3 Compounds have components that cannot be separated by chemical means.
4 Compounds may be grouped according to the specific elements that are present.

A

1 and 4

26
Q

Which shows the correct grouping(s) of physical properties of elements?

1 metal - high tensile strength, high melting point, high conductivity

2 nonmetal - lustrous, ductile, malleable

3 metalloid - semiconductors, lustrous, ductile

A

1 and 3

27
Q

Compound X is composed of carbon, hydrogen, and oxygen atoms. The ratio of its hydrogen to carbon and oxygen atoms is 2:1. What kind of organic compound is compound X?

A

carbohydrates

28
Q

Which of the following is not true about pure substances?

A

cannot be broken down through ordinary means.

29
Q

Sodium hydroxide is one of the main components in making soaps. What is the correct chemical formula for sodium hydroxide?

A

NAOH

30
Q

Which of the following elements is added in food supplements due to its significant role in bone development?

A

calcium (Ca)

31
Q

Sodium hydroxide is one of the main components in making soaps. What is the correct chemical formula for sodium hydroxide?

A

NaOH

32
Q

atoms of the elements are joined together

A

chemical bond

33
Q

processes that create compounds

A

chemical reaction

34
Q

primal matter water

A

thales

35
Q

primal matter earth

A

empedocles

36
Q

primal matter air

A

anixemenes

37
Q

primal matter fire

A

heraclitus

38
Q

component of fire that came from a Greek word for inflammable.

A

phlogiston

39
Q

Presented Law of Conservation of Mass

A

Antoine Lavoisier

40
Q

Before and after reaction, no matter is created nor destroyed

A

Law of conservation of mass

41
Q

stated that if a pure compound is broken down into its constituent elements, the masses of the constituents will always have the same proportions, regardless of the quantity or source of the original substance.

A

Law of definite proportion

42
Q

Presented law of definite proportion

A

Joseph Proust

43
Q

states that when two elements form a series of compounds, the masses of one that combine with a fixed mass of the other are in the ratio of (small) integers to each other.

A

LAW OF MULTIPLE PROPORTION

44
Q

Presented law of multiple proportions

A

John Dalton

45
Q

The electron is discovered using a

A

cathode ray tube

46
Q

discovered electron

A

joseph john thomson (JJ Thomson)

47
Q

discovered protons and neutrons

A

ernest rutherford

48
Q

proposed that the electrons move in orbits around the nucleus

A

neils borh, planetary model of an atom

49
Q

proposed that electrons do not move in a set of paths around the nucleus, but in waves.

A

Erwin Schrödinger, Electron Cloud Model

50
Q

Atoms of the same element that have the same number of protons and electrons but different numbers of neutrons

A

isotopes

51
Q

combination of two or more atomsconnected together by a strong force of interaction, making them behave as a single particle.

A

molecules

52
Q

negatively charged species

A

anion

53
Q

positively chargedspecies called

A

cation

54
Q

gives the simplest whole-number ratio of each element in a compound

A

empirical formula

55
Q

the most common chemical formula wherein symbols of each element are written down with a subscript indicating how many atoms are in the compound

A

molecular formula

56
Q

detailed chemical formulas that show the structure of a compound

A

structural formula

57
Q

compounds that are made of nonmetals chemically bonded to each other.

A

Covalent compounds

58
Q

hold the atoms together in a covalent compound. They are formed when one or more electrons are shared between two nonmetals.

A

Covalent bonds

59
Q

general rule of thumb that describes the tendency of atoms to have a complete set of eight electrons in their valence shell

A

octet rule

LICEO S.Y. 2022-2023 (14 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions