Brainscape's Knowledge GenomeTM

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


See full index

Science > Chemistry > Flashcards

Chemistry Flashcards

1
Q

What does the law of definite composition state?

A

A chemical compound contains the same proportions by mass of the elements regardless of the sample size.

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

What are the components of an atom?

A

Protons (p+), Neutrons (n), Electrons (e-)

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

Where are protons located in an atom?

A

In the nucleus.

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

Where are neutrons located in an atom?

A

In the nucleus.

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

Where are electrons located in an atom?

A

In the electron cloud surrounding the nucleus.

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

What is the kinetic molecular theory?

A

A theory that explains the behavior of gases based on the motion of particles.

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

What is the difference between ionic and molecular compounds?

A

Ionic compounds consist of ions held together by electrostatic forces, while molecular compounds consist of molecules formed by covalent bonds.

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

What are chemical formulas used for?

A

To represent the composition of a compound.

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

What are the physical properties of ionic or molecular compounds?

A

Properties such as melting point, boiling point, solubility, and electrical conductivity.

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

What is the significance of groups and families in the periodic table?

A

Elements in the same group or family have similar chemical properties.

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

Define pure substances.

A

Materials made of only one type of particle.

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

Define mixtures.

A

Materials made of two or more different types of particles.

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

What is the difference between mass number and atomic number?

A

Mass number is the total number of protons and neutrons, while atomic number is the number of protons.

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

What are physical changes?

A

Changes that do not alter the chemical composition of a substance.

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

What are chemical changes?

A

Changes that result in the formation of new chemical substances.

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

What is the process of naming ionic and molecular compounds called?

A

Nomenclature.

17
Q

What is the difference between heterogeneous and homogeneous mixtures?

A

Heterogeneous mixtures have visibly different substances, while homogeneous mixtures have a uniform composition.

18
Q

What are molecular models used for?

A

To represent the three-dimensional structure of molecules.

19
Q

What is the difference between chemical and physical properties?

A

Chemical properties describe a substance’s ability to undergo chemical changes, while physical properties can be observed without changing the substance.

20
Q

What are qualitative physical properties?

A

Properties that can be observed without measurement, such as color and smell.

21
Q

What are quantitative physical properties?

A

Properties that can be measured, such as mass and volume.

22
Q

List the three states of matter.

A
  • Solids
  • Liquids
  • Gases
23
Q

What are exothermic reactions?

A

Reactions that release heat.

24
Q

What are endothermic reactions?

A

Reactions that absorb heat.

25
Q

What are reactants in a chemical reaction?

A

Substances that undergo change during the reaction.

26
Q

What is the difference between solutions and mixtures?

A

Solutions are homogeneous mixtures with a uniform composition, while mixtures can be heterogeneous.

27
Q

What factors affect reaction rates?

A

Concentration, temperature, surface area, and catalysts.

28
Q

What are the properties of metals?

A

Typically good conductors of heat and electricity, malleable, ductile, and have a shiny appearance.

29
Q

What are the types of elements?

A
  • Metals
  • Metalloids
  • Non-metals
30
Q

What are spontaneous reactions?

A

Reactions that occur without external influence.

31
Q

What are nonspontaneous reactions?

A

Reactions that require external energy to occur.

32
Q

List the types of chemical reactions.

A
  • Synthesis
  • Decomposition
  • Single replacement
  • Double replacement
  • Combustion
33
Q

What does the law of conservation of mass state?

A

Mass is neither created nor destroyed in a chemical reaction.

34
Q

What are anions?

A

Negatively charged ions.

35
Q

What are cations?

A

Positively charged ions.

36
Q

What does WHMIS stand for?

A

Workplace Hazardous Materials Information System.

37
Q

What is the purpose of WHMIS symbols?

A

To communicate information about hazardous materials in the workplace.

Science (5 decks)

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