chemistry 7th grade test sample

1. what can you measure in chemistry?
2. what are the tools in chemistry lab?
3. what is pure substance?
4. what are the differences between mixture and compound?
5. what are the techniques to separate mixture? explain 3 of them.

chemistry summary for 9th grade mid test

1. you can measure mass, volume, temperature of substances.
2. there are many tools can be used in.chemistry, such as flask, tube, thermometer, pippette etc.
3. pure substance means the substance consist of 1 element only.
4. mixture means the substance is made up of more than 1 element.
5.compound is substance that is made up of more than 1 subtsance chemically.
6. for the comparison of mixture and compound can be seen in textbook.
7. there are 3 states of matter. they are solid, liquid and gas.
8. for particle arrangement can be seen in textbook.

7th grade physics exercise for test

1.  What can you measure in physics?
2. Please mention 5 tools in physics laboratory!
3. What kind of job that involve skill in physics?
4. Please mention 5 base quantities that you know!
5. in your opinion, why do we need to learn physics?

summary of ch. 3-5 for 9th grade physics

1. inertia is the ability of an object to stay in its state.
2. the greater the inertian of an object, the more difficult it gets influenced by force.
3. there are 2 kinds of fraction. they are dynamic friction and static friction.
4. dynamic friction is a force that cause an object move while static friction is a force tha cause an object stopped.
5. mass is the fixed content of an object while weight is mass influenced by force.
6. density = mass / volume.
7. moment of force means the way of force produced temporarily and in particular time.
8. moment of force  = f x d
9. there are 3 kinds of equlibrium. they are stable equlibrium, unstable equlibrium and neutral equlibrium.

biology 9th grade ch. 2

<p>1. cell is basic unit of life which become the main units in more complicated life forms.
2. each living is composed of different cells which work together as system.
3. Animal cell consist of cell membrane, cytoplasm, nucleus and the other organelles.
4. cell membranes have the ability to protect the content of the cell.
5. cytoplasm is used to store protein, water, food and some organelles.
6. nucleus is the main part that bring the genetic charateristics of living things.
7. the nucleus itself contains chromatin, nucleoplasm.
8. there are the other organelles, such as mitochondrion, ribosome, endoplasmic reticulum (ER), golgi body and vacuole.
9. for the comparison between plant and animal cell can be seen on page 21 of your textbook.

Biology summary 7th grade for mid test

1. Biology is branch of science that studies about life.
2. the word "biology" is from "bio" means life and "logos" means knowledge.
3. biotechnology means the use of technology to develop the life quality of living things.
4. there are several factors that make living things different from non living things. the living things have the ability to move by themselves, to grow, to reproduce, to respond to their surrounding, and to make or find food.
5. all living things are unfluential to other living things.

biology 9th grade ch. 1

1. biology is branch of science that studies about life.
2. there are several kinds of branch in biology, they are zoology, botany, anatomy, physiology and many others.
3. living things have general abilities.
4. they are the ability to find or make food, the ability to move by themselves, the ability to excrete waste materials, the ability to grow and the ability to reproduce.
5. evolution means the ability of living things to adapt on their surrounding by developing their physical abilities.
6. extinction means the failure of living things to breed their own kinds.