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science yr 7 term1 > science t1 > Flashcards

science t1 Flashcards

1
Q

what are the rules of laboratory safety

A
  1. do not run
    2.tie up long hair in a prac
    3.do not bring any food or drink or consume anything in the lab
    4.wear leather shoes
    5.listen to the teacher
    6.if something is broken tell the teacher
  2. do not touch, smell or taste any chemicals
  3. pay attention to the teacher
    9.always wear safety goggles
  4. don’t leaves personal items around the table
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2
Q

what does a Bunsen burner do?

A

heat up the subtances

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3
Q

what does a beaker do?

A

hold the liquid

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4
Q

what does a measuring cylinder do?

A

measure the volume of a liquid

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5
Q

what’s does a test tube do?

A

to hold, mix or heat chemicals

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6
Q

what’s does a boss head and clamp do?

A

The boss head attaches the clamp to the retort stand and the clamp holds the glass containers so its doesn’t fall through

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7
Q

what does a crucible do?

A

To melt substances

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8
Q

what does a tripod do?

A

it hold flask or beaker as it gets heated by the Bunsen burner

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9
Q

what does a funnel do

A

it transfer a substance to one container to another

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10
Q

what does a retort stand do?

A

it is attached to the clamp by the boss head so that the clamp can hold other equipment

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11
Q

what’s does a conical flask do?

A

its holds and measure liquids

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12
Q

what does a gauze mat do?

A

its use to hold a container as its being heated

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13
Q

what does a heat mat do?

A

its protects the work space that the experiment is happening on

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14
Q

what does a test tube holder do?

A

hold test tube if its to hot or cannot be held

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15
Q

what does a pipette do?

A

it transfers or measures small amount of liquids

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16
Q

what do safety goggles do?

A

to protect your eyes

17
Q

what is a independent variable?

A

a variable that cannot be changed

18
Q

what’s a dependent variable

A

a variable that can change

19
Q

on a graph where is the dependent variable and independent variable?

A

the independent is on the x axes and dependent in on the y axes

20
Q

what is density?

A

density is the mass of a one centimeter cube.

21
Q

how do u get a effective experiment?

A

to get a effective experiment you how that you know the problem that your trying to solve, what your measuring, what your changing, what your going to keep and anything else that might effect the experiment.
Change one thing
Measure something
keep everything the Same
Cows
Moo
Softely

22
Q

3 states of matter

A

liquid, solid and gas

23
Q

what is matter?

A

everything is made up of matter
matter is any substance that has a mass

24
Q

properties of a solid

A

has a fixed shape
cannot be compressed
cannot flow

25
Q

properties of a liquid

A

takes shape of the container is in is
cannot be compressed
can flow

26
Q

properties of gas

A

no fixed shape- takes shape of container
can be compressed
can flow

27
Q

particles arrangement of a sold

A

the particles are closely compact and cannot move but do vibrate a little bit. they also have a high density

28
Q

particles arrangement of a liquid

A

The particles are close to each other but are seperated and move more then a solid but not by much and have a more denstiy of a solid but less then a gas

29
Q

particles arrangement of gas

A

The particles are separated and are everywhere. they move around a lot have have a high density

30
Q

solid to a gas

A

sublimation

31
Q

gas to a solid

A

deposition

32
Q

solid to a liquid

A

melting

33
Q

liquid to a gas

A

evaporating

34
Q

gas to liquid

A

condensing

35
Q

liquid to a solid

A

freezing

36
Q

what is a solvent

A

the liquid that desolves

37
Q

what is a solute

A

the substance that is being desloved

38
Q

what does a graph need

A

title
labels of the axes and the name of the variable
scale

science yr 7 term1 (1 decks)

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