Chemistry Unit One Test Guide

What is the number one priority in the science classroom

Safety of students, instructors, and parents.

When must lab safety rules be followed

At all times in the laboratory.

Can students work in the lab without the instructor present

No.

What should you do if you don’t understand how to use equipment

Ask the instructor.

Can experiments be left unattended

No.

What is the proper lab dress code

Tie back long hair, secure loose clothing, no dangling jewelry, wear closed-toe shoes.

Can you eat or drink in the lab

No eating, drinking, or chewing gum.

What safety equipment should you know the location of

Eyewash, safety shower, fire blanket, fire alarm, exits, and phone.

What should you wear when handling chemicals or heat

Eye protection and protective clothing.

Can you wear contact lenses in the lab

Only with instructor permission.

What should you do before starting a lab

Read all directions, labels, and procedures.

What should you do after finishing a lab

Clean work area, turn off gas/water, dispose of waste properly, wash hands.

Where should solid materials, matches, or paper be discarded

In waste containers, not in the sink.

Should unused chemicals be returned to their bottles

No, unless the teacher says so.

How should all chemicals be treated

As if they are dangerous.

Should you pipette by mouth

No.

How should sharp tools be carried

Pointed down and away from others.

What should you do if chemicals spill on skin or eyes

Flush with water for at least 20 minutes and tell the teacher.

What should you do before inserting glass tubing into stoppers

Lubricate it.

Where should you never point a test tube

At yourself or others.

Should you look into containers that are being heated

No.

What is the correct way to dilute acid

Add acid to water.

Can you leave heating substances unattended

No.

How should appliances be unplugged

By pulling the plug, not the cord.

What should you check before using electrical equipment

That your hands are dry.

What must you always do after an experiment

Wash your hands.

Graduated Cylinder

Measuring volume in ml of liquid

Erlenmeyer Flask

Measure approximate volume mL of liquid

Beaker + Watch Glass

Measure/Hold approximate volume mL of chemicals

Test tube + Holder

holds chemical conveniently

Clamps - Screw

Hold things you do not want to touch

Tongs

Holding beakers and things you don’t want to touch

Bunsen burner + Striker

Lighting Bunsen burner

Ring Stand + Tripod

Holding things above burner

Glass Rod + Scoop

Used to stir things, scoop to pick up things you don’t want to touch

Mortar + Pestel

Used to grind things

H

Hydrogen (1)

He

Helium (2)

Li

Lithium (3)

Be

Beryllium (4)

B

Boron (5)

C

Carbon (6)

N

Nitrogen (7)

O

Oxygen (8)

F

Fluorine (9)

Ne

Neon (10)

Na

Sodium (11)

Mg

Magnesium (12)

Al

Aluminum (13)

Si

Silicon (14)

P

Phosphorus (15)

S

Sulfur (16)

Cl

Chlorine (17)

Ar

Argon (18)

K

Potassium (19)

Ca

Calcium (20)

Sc

Scandium (21)

Ti

Titanium (22)

V

Vanadium (23)

Cr

Chromium (24)

Mn

Manganese (25)

Fe

Iron (26)

Co

Cobalt (27)

Ni

Nickel (28)

Cu

Copper (29)

Zn

Zinc (30)

Ga

Gallium (31)

Ge

Germanium (32)

As

Arsenic (33)

Se

Selenium (34)

Br

Bromine (35)

Kr

Krypton (36)

What is the study of matter?

physical interactions,reactions,change,properties,structure, composition,bonding

What does the number of protons in the nucleus determine?

Atomic Number

What are the 2 types of matter?

Homogenous and Heterogenous

What is homogenous matter?

everything is the same like water

What is heterogenous matter?

everything is different from each other like salad dressing

What are 2 homogenous mixture types?

Pure substance, solution

What is the definition of solution?

Solute dissolved into the solvent

What does solution lead to?

Mixture

What is the definition of mixture?

2+ mixtures combined together

What are the two types of pure substance?

Element and Compound

Element Definition?

One kind of atoms like Li- Lithium

Compound Definition?

2+ atoms chemically bond together

Covalent Bonds Definition?

2 non metal chemically bonding together

What is Qualitative?

describing the substance like appearance

What is Quantitative?

the measurement of the substance, density, more protons in the nucleus = more density

Scientific Notation/ Exponential Notation?

#*10^ / #EE^

What are the SI Base Units?

Time, Length, Luminous Intensity, Mass, Temperature, Amt of Substance, Electric Current, Yard, Meters

What is time’s derived unit?

Second (s)

Length derived unit?

meter m

Luminous Intensity derived unit?

candela cd

Mass derived unit?

kilo kg

temp derived unit?

kelvin k

Amt of substance derived unit?

mole mol

Electric Current derived unit?

ampene g

Yard is how much?

36

Meters is how much?

39

If its a non zero digit how much do you round?

Non-Zero Digit means all

Leading Zeros Rounding

None they are useless