Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Chemistry > Assignment 1 > Flashcards

Assignment 1 Flashcards

(78 cards)

Start Studying
1
Q

What is matter?

A

Anything that has mass and takes up space.

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

True or False: All matter is made up of atoms.

A

True.

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

Fill in the blank: The smallest unit of an element is called a ______.

A

atom.

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

What are the three main states of matter?

A

Solid, liquid, and gas.

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

What is a molecule?

A

Two or more atoms bonded together.

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

True or False: A compound is a type of molecule.

A

True.

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

What is the difference between an element and a compound?

A

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

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

What is the periodic table?

A

A tabular arrangement of elements organized by increasing atomic number.

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

Fill in the blank: The atomic number represents the number of ______ in an atom.

A

protons.

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

What is a chemical reaction?

A

A process that leads to the transformation of one set of chemical substances to another.

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

True or False: Solids have a definite shape and volume.

A

True.

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

What is a physical change?

A

A change that affects one or more physical properties of a substance without altering its chemical composition.

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

What is an ion?

A

An atom or molecule that has a net electric charge due to the loss or gain of one or more electrons.

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

Fill in the blank: A ______ is a pure substance made of two or more elements that are chemically combined.

A

compound.

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

What is the difference between a homogeneous mixture and a heterogeneous mixture?

A

A homogeneous mixture has a uniform composition, while a heterogeneous mixture has a non-uniform composition.

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

What are the two main types of bonds in chemistry?

A

Ionic bonds and covalent bonds.

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

True or False: Gases have a definite volume but no definite shape.

A

False.

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

What is density?

A

Mass per unit volume of a substance.

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

Fill in the blank: The ______ is the central part of an atom, containing protons and neutrons.

A

nucleus.

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

What is an isotope?

A

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

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

What is a solution?

A

A homogeneous mixture where one substance is dissolved in another.

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

True or False: All mixtures can be separated by physical means.

A

True.

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

What is sublimation?

A

The process of a solid turning directly into a gas without becoming a liquid.

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

Fill in the blank: The process of a gas turning into a liquid is called ______.

A

condensation.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
What is the law of conservation of mass?
Mass is neither created nor destroyed in a chemical reaction.
26
What are reactants?
Substances that undergo a chemical change in a reaction.
27
What are products in a chemical reaction?
Substances formed as a result of a chemical reaction.
28
True or False: A catalyst is a substance that speeds up a chemical reaction without being consumed.
True.
29
What is an alloy?
A mixture of two or more metals.
30
Fill in the blank: The ______ is the smallest particle of a compound that retains its chemical properties.
molecule.
31
What is an alkali metal?
A group of elements in Group 1 of the periodic table, highly reactive and typically found in nature combined with other elements.
32
What are noble gases?
Elements in Group 18 of the periodic table that are inert and do not readily form compounds.
33
True or False: Metals are good conductors of heat and electricity.
True.
34
What is a covalent bond?
A chemical bond formed when two atoms share one or more pairs of electrons.
35
What is an ionic bond?
A chemical bond formed between two ions with opposite charges.
36
Fill in the blank: The ______ of an element is the average mass of its isotopes, weighted by their natural abundance.
atomic mass.
37
What is a solute?
The substance that is dissolved in a solution.
38
What is a solvent?
The substance in which the solute is dissolved.
39
True or False: A saturated solution contains the maximum amount of solute that can dissolve at a given temperature.
True.
40
What is a suspension?
A heterogeneous mixture in which solute-like particles settle out of a solvent-like phase.
41
Fill in the blank: The process of a liquid turning into a gas is called ______.
evaporation.
42
What is the difference between a physical change and a chemical change?
A physical change alters the form of a substance but not its chemical composition, while a chemical change alters the substance's chemical composition.
43
What is an empirical formula?
A chemical formula that shows the simplest whole-number ratio of the elements in a compound.
44
True or False: Acids have a pH less than 7.
True.
45
What is a base?
A substance that accepts protons or donates electron pairs in a chemical reaction.
46
Fill in the blank: The pH scale ranges from ______ to ______.
0 to 14.
47
What is a chemical equation?
A symbolic representation of a chemical reaction showing the reactants and products.
48
What is a balanced chemical equation?
An equation where the number of each type of atom on the reactant side equals the number on the product side.
49
True or False: The states of matter can change with temperature and pressure.
True.
50
What is a polymer?
A large molecule composed of many repeated subunits called monomers.
51
Fill in the blank: The ______ is the building block of all matter.
atom.
52
What is a crystal?
A solid in which atoms are arranged in a highly ordered structure.
53
What is a gas's behavior in terms of shape and volume?
Gases have no definite shape or volume and will expand to fill their container.
54
True or False: Chemical properties can only be observed during a chemical reaction.
True.
55
What is thermal expansion?
The tendency of matter to change in volume in response to a change in temperature.
56
What is a phase change?
A transition of matter from one state to another.
57
Fill in the blank: The process of a solid turning into a liquid is called ______.
melting.
58
What is a chemical property?
A characteristic of a substance that becomes evident during a chemical reaction.
59
What is a heterogeneous mixture?
A mixture made up of two or more substances that remain distinct.
60
True or False: An atom's mass number is the sum of its protons and neutrons.
True.
61
What is a neutron?
A subatomic particle found in the nucleus of an atom, with no electric charge.
62
Fill in the blank: The force that holds atoms together in a molecule is called a ______.
chemical bond.
63
What is the difference between an anion and a cation?
An anion is a negatively charged ion, while a cation is a positively charged ion.
64
What is condensation?
The process by which gas turns into a liquid.
65
True or False: Elements can be broken down into simpler substances by chemical means.
False.
66
What is a chemical formula?
A way of expressing the composition of a compound using symbols for its constituent elements.
67
Fill in the blank: The ______ of an atom is determined by the number of protons it contains.
identity.
68
What is a solvent in a solution?
The substance in which the solute is dissolved.
69
What is a saturated solution?
A solution that cannot dissolve any more solute at a given temperature.
70
True or False: All compounds are molecules, but not all molecules are compounds.
True.
71
What is the main component of air?
Nitrogen.
72
Fill in the blank: The boiling point of water is ______ degrees Celsius at standard atmospheric pressure.
100.
73
What is a crystalline solid?
A solid that has a well-ordered structure and a definite geometric shape.
74
What is an amorphous solid?
A solid that lacks a well-defined structure or shape.
75
True or False: The particles in a solid are tightly packed and vibrate in place.
True.
76
What is the main difference between organic and inorganic compounds?
Organic compounds contain carbon, while inorganic compounds do not.
77
Fill in the blank: The process of a liquid changing to a gas is called ______.
evaporation.
78
What is a chemical bond?
A lasting attraction between atoms that enables the formation of chemical compounds.

Chemistry (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions