True or False:

always add acids to water when working with chemicals

1. apron
2. goggles
3. gloves

• should be stored on wood shelve
• stored at eye level
• stored in containers with date, exp. date, safety precautions  for handling
• separated by reaction type; ex. acid in one place, base in another place
• waste should be disposed of properly

these are all procedures for the...

• do not touch animals or plants without adult permission
• never reach under rocks or inside of holes
• wear safety gloves
• ask adult to pick up litter

are procedures when following...

• keep hands dry
• don't use extension cords
• do not use recently used electricial devices

are 3 safety procedures for...

this type of scale is:

• measured in newtons
• used to measure weight up to 20 newtons
• used to measure fruits and vegetables
• can be found in grocery stores

it is used to measure the mass of an object

• the most accurate device used for measuring liquid volume
• holds up to 100 milliliters
• can be glass or plastic

may not be reliable but appropriate

examples include:

• marbles/paperclips to measure mass
• body parts to measure length
• sticks to measure length

they give precise and reliable measurements

examples include:

• rulers, meter sticks, balance scale, graduated cylinder, clocks, calculators

• these are basic storage and chemical handling containers
• marked @ 5-25 ml
• flatter at the bottom and holds more liquid

• cubic meter is used to measure a solid such as a box.  the formula is l x w x h
• liter is used to measure liquid; a graduated cylinder is used

these are 2 ways to measure...

• symbol is "da"
• means 10
• base unit multiple is 10

• symbol is "m"
• means thousandth
• base unit is written as 0.001
• fraction equivalent is 1/1000

• means hundredth
• symbol is "c"
• base unit multiple is 0.01
• fraction equivalent is 1/100

• symbol is "k"
• means thousand
• base unit multiple is 1000

• symbol is "h"
• means hundred
• base unit multiple is 100

• symbol is "d"
• means tenth
• base unit multiple is 0.1
• fraction equivalent is 1/10

for small lengths like finger tips

10 of these = 1 centimeter

• the amount of matter an object has; example - a marble has greater of this than a cotton ball
• not affected by gravity
• a balance scale is used to measure it

• use kilograms for large objects like a can of juice or block of cheese
• use grams to measure small objects liek a coin, marble, pencil, small rock
• use milligrams to measure very small objects like pebbles

are examples of how to measure...

• to measure the volume of a solid object, place the object in a water filled cylinder
• the increase in the volume of water is equal to the volume of the irregular shaped object

this is known as...

-concept maps

-graphs

-tables

are used in science to...

• shows a relationship of one variable to another
• makes data easy to interpret and analyze

• type of diagram taht shows how ideas are linked together or related
• helps organize information about a topic
• breaks down into smaller parts for easier understanding

• a form of prediction that uses high order thinking skills
• used for quick observations when a precise measurement is not needed

• it is the standard measurements that all scientist around the world use and can understand
• it is convenient because unit sizes vary by multiples of 10