Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Science test term 3 > Chem > Flashcards

Chem Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

What is a physical change?

A

A physical change in matter that does not affect the chemical properties of matter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is Quantitative data?

A

Quantitative data are data represented numerically, including anything that can be counted, measured, or given a numerical value.
(Examples: Cost of a car, height of a building, and weight of an apple)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is Qualitative data?

A

Qualitative data are data representing information and concepts that are not represented by numbers.
(Examples: Your gender, most popular brand of shoes, sour pickles and the colour of flowers)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is a homogenous mixture?

A

A homogenous mixture means 2 of the same. Meaning you can not see the difference in the mixture.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is a chemical change?

A

A material changing into a new material with different properties

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is a heterogeneous mixture?

A

A heterogeneous mixture means 2 different. Meaning you can see different parts of the mixture easily.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the six changes of state?

A

Solidification, Sublimation, condensation, evaporation, deposition and melting

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How do gas particles move?

A

Gas particles move quickly and randomly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What does Solidification mean?

A

the process of becoming solid or making something solid.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How do liquid particles move?

A

Liquid particles move around each other.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What does sublimation mean?

A

conversion of a substance from the solid to the gaseous state without its becoming liquid.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How do solid particles move?

A

Solid particles vibrate in place

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is a pure substance?

A

A pure substance is made of just one thing, so it can not be broken down

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What does condensation mean?

A

when water turns from vapour to liquid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

If you have the mass and volume, how do you calculate the density?

A

To find the density you divide the mass by the volume

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What does evaporation mean?

A

Evaporation is the process by which water changes from a liquid to a gas or vapor.

17
Q

If you have the mass and density, how do you calculate the volume?

A

To find the volume you divide the mass by the density

18
Q

what does deposition mean?

A

Deposition is when a substance in gas form changes states to become a solid.

19
Q

If you have the volume and density, how do you calculate the mass?

A

To find the mass you multiply the density by the volume

20
Q

What does melting mean?

A

melting, the change of a solid into a liquid when heat is applied.

21
Q

What are the different parts of an atom

A

nucleus, protons, electrons, neutrons

22
Q

Name lab equipment we used. (Hint: There are 7)

A
  1. Test-tube rack
  2. Ring stand
  3. Test tubes
  4. Beaker
  5. Erlenmeyer flask
  6. Rubber stoppers
  7. pipestem triangle
23
Q

What is the charge of protons?

A

Protons have a positive electrical charge of one (+1) . 1 amu

24
Q

what is the charge of electrons?

A

An electron has a charge of −1 1/1836th of 1.66x10

25
Q

What is a subatomic particle?

A

The three subatomic particles are protons, neutrons and electrons

26
Q

What is an elementary particle?

A

an elementary particle is a subatomic particle that is not made up of other particles

27
Q

what is the charge of neutrons?

A

charge 0 netral 1 amu

28
Q

In Rutherford Gold Foil experiment, what did he do?

A

He exposed a sheet of gold foil, to positively charged alpha particles. He expected all the particles would go straight through. Most of the alpha particles did go straight through, but some bounced back from the foil.

29
Q

What are the quarks energy charge calculations?

A

proton: 2 ✕ (2/3) + (-1/3) = 4/3 – 1/3 = 1. (Needs to be 1)
neutron: (2/3) + 2 ✕ (-1/3) = 2/3 – 2/3 = 0. (Needs to be 0)

30
Q

What did Rutherford’s gold foil experiment help prove

A

His experiment led to the discovery of nucleus

31
Q

What is the boiling point of water?

A

100c

32
Q

what is the freezing point of water?

A

0c

33
Q

what is the melting point of water?

A

0c

34
Q

what is water at room temperature?

A

20c

Science test term 3 (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions