welcome to chemistry

Erlenmeyer flask- is used to measure, mix, and hold liquids in the lab.

Evaporating dish- used to evaporate a liquid so that we can get the solid back.

Watch glass- is used to evaporate liquids, hold substances for heating/ weighing, cover for beaker

Facts

Wire mesh with ceramic center- flame shield, hold beakers over a flame

Forceps- move, grasp, hold, items that shouldn't be touched and is also used in dissection

Ring clamp- hold glassware over a flame

Apron- to protect clothing

crucible- used for heating/ holding chemicals that are very hot

Bunsen burner- used for heating, sterillization and combustion and is also an alternative to hot plate

Ruler- measuring length for quantitive observation

Beaker tongs- lifting/ carrying/ heating beakers

mortar and pestle- crush substances into a fine paste/ powder

Graduated cylinder- used to measure volume exactly, (ex. 78ml)

Test tubes- heat small amount of liquids or solids

Beaker- holding/ mixing liquids, not exact amounts

Ring stand- to hold the ring clamp

scoopula- used for transferring small amount of granulated chemicals from jars to beakers

Test tube holder- lifting/ carrying hot test tubes

Test tube rack- holds many test tubes at once, drying rack

Pipette- transports really small amount of liquids (drops)

Thermometer- measure temperature/ changes with a high degree of precision

Funnel- pour liquids into a small opening filtering

Glass stirring rod- to mix chemicals

Clay triangle- used for heating a crucible evenly over a bunsen burner

1. purpose- the question that we are asking or the reason for the experiment.

2. Hypothesis- an educated guess of what we think might happen.

3. Materials- the equipments that we need to do the experiment

4. procedure- carry out the experiment

5. Result- analyze the observations

6. Conclusion- make a conclusion of what the experiment is about.

we use the scientific method to help us to understand how to do a science experiment.

compounds with metals

LiCL- Lithium chloride

first element keeps its name, second element ends in ''ide''

compounds without metals

SO2 sulfure dioxide

use a prefix to figure out how many atoms there are

the periodic table has 118 elements, which has metals, non- metals, and metalloids. and is organized in groups 1-18.

chemical

A property that can be observed only during a chemical change.

reaction with air, flamability.

reaction with acid, reaction with base, reaction with water,

physical

A property that can be observed without changing the identity of the substance.

Ex. odor, density, structure, hardness, solubility

Disappearing puddle, Dry ice, sawing wood

A physical changes is when somethng changes the form of a substance, but it does not change into another substance. like for example, making orange juice, the state of the juice is changed, but not the properties of it.

A chemical change is when a substance undergoes a chemical change, and it is change into a different substance with different properties.

colour change, gas production, temperature change.

the protons, nuetrons, and the electrons are in the nuecleus.

protons are positively charge, electrons are negatively charge and nuetrons are nuetral

protons and nuetrons are found in the nuecleus and electrons are found ouside of the nuecleus

there are 10 WHIMIS safety symbols

Pure substances - made up of only one type of particle

Elements - made up of only one type of atom Ex. Hydrogen

Compounds- made up of two or more different atoms bonded together Ex. Salt

Mixtures- made up of two or more different types of particles

Heterogeneous mixtures- more than one part of the mixture is visible Ex. Pizza

Homogeneous mixtures- only one part of the mixture is visible Ex. Millk