Chemistry Flashcards
(30 cards)
Define chemistry. (1)
The study of matter.
Define matter. (1)
Anything that has mass and takes up space.
List four points of the Particle Theory of Matter.
- All matter is made up of small particles known as atoms.
- Particles of matter are constantly in motion.
- Particles of matter attract each other.
- Particles of matter have spaces between them.
Define substance.
Matter that consists of only one type of particle.
Define element. (1)
A substance in which the particles are atoms.
Define compound. (1)
Substances formed by chemically combining 2 or more elements.
Define mixture. (1)
Matter that consists of two or more types of particles that are physically mixed together.
Define homogeneous mixture. (1)
A mixture consisting of true particles (atoms or molecules).
List examples of homogeneous mixtures. (4)
- Salt water
- Sugar water
- Vinegar
- Vodka
Define solution. (1)
A type of homogeneous mixture in which one substance is dissolved in another.
In a solution, the ______ is dissolved into the ______.
In a solution, the solute is dissolved into the solvent.
Define alloy. (1)
A solid dissolved into a solid.
Define / describe heterogeneous mixtures. (2)
- A mixture containing things that are not true particles.
- Parts will be visible because particles are bigger.
Define / describe suspensions. (2)
- A heterogeneous mixture in which the particles are dispersed throughout * the medium.
The particles will settle through gravity.
Define / describe colloids. (1)
A heterogeneous mixture in which the particles are smaller than a suspension’s, but still bigger than true particles.
Diatomic elements. (7)
Bromine, Iodine, Fluorine, Hydrogen, Chlorine, Oxygen, Nitrogen.
Physical property. (1)
Describes a characteristic that can be measured without changing its chemical properties.
Chemical property. (1)
Describes something’s chemical reaction with something else.
Examples of physical properties. (6)
- Boiling point
- Melting point
- Colour
- Density
- Mass
- Weight
Examples of chemical properties. (6)
- Flammability
- Toxicity
- Radioactivity
- Heat of combustion
- Reactivity
- Chemical Stability
Physical change. (1)
When the material changes without changing its chemical properties.
Chemical change. (1)
When a chemical reaction occurs and new particles are made.
Clues of a chemical reaction. (5)
- Bubbling
- Change in temperature
- Quick colour change
- Formation of a precipitate
- Change is difficult or impossible to reverse.
Traits of “Metal” elements. (6)
- Gives electrons in ionic bonding.
- Tend to be dense
- Are malleable (Durable)
- Are ductile (Durable)
- Conduct heat and electricity well.
- Have luster (shine)
