Science 4th 2nd term Final revision

Drag and Drop

Acids and bases are compounds that react easily to other ​

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. We can test them using ​

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, which has a ​

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that changes color when it ​

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an acid or a base.

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substances

litmus paper

dye

touches

Match

Match the following

• Blue litmus paper turns red. They can be weak, like citrus. Strong acids can

  dissolve metals and burn your skin.

• Base turns litmus paper blue. In food, it can taste bitter. Strong bases are found in

  drains.

• Separating a solid from a liquid by evaporating the liquid

• A solution is heated until a liquid becomes a gas. The solid is left behind.

  The gas then goes through a condenser and turns back into a liquid.

• A filter separates things by size.

Acids

Base

Solid extraction

Distillation

Filtration

• Acids

• Base

• Solid extraction

• Distillation

• Filtration

Match

Match the following

• _____are used to separate magnetic material from non-magnetic in a

  mixture.

• When a difference in densities makes the mixture separate.

• _____is formed when two or more elements combine chemically, during a chemical reaction.

• When acids and bases combine, they react this way

• A saltwater solution and water are ____

Magnets

Settling

A compound

chemically

neutral.

• Magnets

• Settling

• A compound

• chemically

• neutral.

Fill in the Blanks

Mixtures can be

with certain processes.

Fill in the Blanks

The nail reacted to water and oxygen and create

. The elements that make up the nail changed.

Multiple Choice

The nail changes shape, but the particles _______ the same.

• remain

• don't remain

Drag and Drop

We create a mixture when we combine substances without​

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them chemically. An ​

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is a mixture of one or two elements in which one is a ​

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. They can be stronger when together. A ​

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is a mixture in which two or more substances are ​

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completely. To dissolve means to become incorporated with a liquid. Dissolving creates solutions. The substance that dissolves is a solvent, and the one being dissolved is a solute.

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altering

alloy

metal

solution

blended

Match

Match the following

• happen when we change the appearance, but not the substance of matter.

• happen when we alter the matter on a molecular level, breaking or forming bonds

• is a chemical reaction between sulfur and silver. Rust is a chemical reaction between iron,

  oxygen, and water

• Liquid to gas

• Gas to liquid

Physical changes

Chemical changes

Tarnish

Evaporation

Condes

• Physical changes

• Chemical changes

• Tarnish

• Evaporation

• Condes

Multiple Choice

Matter goes through changes. There are _____ types of changes

• 1

• 2

• 3

• 0

Match

Match the following

• Usually shiny, good conductors, usually hard, and have

  high density

• Usually don’t have luster, have poor conductors, and

  usually have lower densities.

• They have some properties of metals and some properties

  of non-metals.

• Elements from group 17 of the periodic table. They react to

  group one.

• Elements from group 1, metals except for Hydrogen. They

  react strongly with water

Metals

Non-metals

Metalloids

Halogens

Alkali metals

• Metals

• Non-metals

• Metalloids

• Halogens

• Alkali metals

Match

Match the following

• groups

Gives the number of protons present

Starting with the first letter of the name

Full name of the element

Weight of the element in unified atomic

mass units.

The columns in the table

• Gives the number of protons present

• Starting with the first letter of the name

• Full name of the element

• Weight of the element in unified atomic

  mass units.

• The columns in the table

Fill in the Blanks

Elements are organized in the

of elements by their properties the atomic number

Match

Match the following

• Fixed volume

  • Fixed shape

• Fixed volume

  • Shape conforms to the containers

• Volume conforms to the containers

  • Shape conforms to the containers

Solid

Liquid

Gas

• Solid

• Liquid

• Gas

Match

Match the following

• - Matter is anything that has mass and takes up space. Everything is made up of matter, both living and non-living things.

• - Properties are ways to describe matter. It can be size, shape, or color for example.

• - How much matter is making up an object. It is a unit of measure for the amount of matter. Usually measured in grams or kilograms.

• How much space matter is taking up. It is counted by cubic units in an object. It

  can also be measured by a tool called a graduated cylinder.

• - Magnetism is the ability of matter to attract magnetic objects.

  - Solubility is the ability of matter to blend into a liquid.

  - Strength is the amount of pressure matter can endure.

  Buoyancy is the upward force of a gas or a liquid, it tells us whether something

  will sink or float

Matter

Property

Mass

Volume

Unseen

properties

• Matter

• Property

• Mass

• Volume

• Unseen

  properties

Dropdown

Stars are ​

Select answer

of hot gases that​

Select answer

, stars are found in large groups called ​

Select answer

. Our Sun is in the ​

Select answer

galaxy

Fill in the Blanks

Smaller objects in the solar system include

Fill in the Blanks

The Moon revolves around Earth about once every

days.

Fill in the Blanks

In a

eclipse, Earth casts a shadow on the Moon.

Fill in the Blanks

In a

eclipse, the Moon casts a shadow on Earth.

Fill in the Blanks

Day and night on Earth are caused by

.

Fill in the Blanks

Rotation is the act of

. An axis is an imaginary

or real line that something spins around.

Fill in the Blanks

Apparent motion is the way something appears or seems to

Fill in the Blanks

A

forms when light is blocked by an object and cannot pass through.

Fill in the Blanks

Seasons are caused by

. Revolution happens when one object revolves around another.

Draw

Draw

Video Response

what does rotation mean?

Open Video Recorder

Video Response

B. When a planet rotates, what does the hemisphere facing the Sun experience?

Open Video Recorder

Video Response

C. The planets rotate on their own ___________.

Open Video Recorder

Video Response

D. Which planet has the longest rotation? If you went to sleep on this planet for half a day, how long

would you have slept?.

Open Video Recorder

Video Response

E. Which planet has the shortest day? How long would you have been at school if you spent half of

the day at school on this planet?

______________________________

Open Video Recorder

Dropdown

1. A group of stars that make a pattern is called a ​

Select answer

3. Our star, the Sun, is a type of star called the​

Select answer

4. Hotter stars in space are​

Select answer

5. Scientist Galileo Galilei invented the​

Select answer

Dropdown

6. When a meteor strikes the moon a ​

Select answer

can form.

7. A large glowing sphere of gas that emits heat is called ​

Select answer

.

8. The Moon itself does not glow. It ​

Select answer

the light from the Sun.

9. A light year is a measure of ​

Select answer

scientists use.

10. Force of attraction between objects is called ​

Select answer

Video Response

Luisa made a solution of water and sugar in a jar. She put the lid on the jar and left it in an warm place overnight. The next day she opened the jar and saw that the inside of the lid was wet. What liquid was inside the lid?

Open Video Recorder

Open Ended

b. Where did the liquid come from?

Open Ended

c. Name the process that made the liquid on the inside of the lid. Explain how it happens.

Open Ended

d. Which process is the reverse of the process you mentioned before?

Open Ended

d. Which process is the reverse of the process you mentioned before?

Open Ended

f. Will the liquid on the inside taste sweet? Why or why not?

__________________________________________________

Multiple Choice

1.) Changes of state are ________.

• A) physical

• B) chemical

• C) compounds

Multiple Choice

2. This type of change alters the matter on a molecular level_______.

• A) physical

• B) chemical

• C) base

Multiple Choice

3. This change begins and ends with the same type of matter

• A) physical

• B) chemical

• C) Acid

Multiple Choice

4.) Filtration and magnetism are used to separate mixtures

• A) magnetically

• B) physically

• C) chemically