Chemistry Flashcards
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)
