Dimension 3 Unit 1

Question 1

Physical or chemical properties of matter: Flammability

Answer 1

Chemical

Question 2

Reactions with air, water, and other chemicals are..

Answer 2

Chemical properties of matter

Question 3

Physical change

Answer 3

The material in the change can be structurally put back to what it was before, and you are only changing its structural state.

Question 4

Chemical change

Answer 4

Making a new substance that can’t go back to its original form.

Question 5

What are mixtures?

Answer 5

The combination of 2 or more substances

Question 6

What do you use to measure mass?

Answer 6

triple beam balance

Question 7

What do you use to measure volume?

Answer 7

graduated cylinder and ruler

Question 8

What is the density of water?

Answer 8

1.0

Question 9

What are signs of a chemical change?

Answer 9

Bubbling, fizzing, temperature change, odor, color change, gas formation, precipitate formation

Question 10

What is the definition of matter?

Answer 10

anything that takes up space

Question 11

Is sunlight an example of matter

Answer 11

noooooooooo!!!!!!!!!!!!!!!!!!!!!!!!!!

Question 12

Homogenous mixture

Answer 12

A mixture where you cannot see the different parts

Question 13

Heterogenous mixture

Answer 13

A mixture where you can see the different parts

Question 14

Examples of homo-

Answer 14

-smoothie
-vitamin gummies
-cake batter
-lemonade

Question 15

Examples of hetero-

Answer 15

-trail mix
-skittles
-lucky charms

Question 16

Two objects have the same mass. One object is on earth and the other is on the moon. Do the objects have the same weight?

Answer 16

They do not have the same mass because on the moon there is a weaker gravitational pull so the weight is less on the moon.

Question 17

What is the definition of weight?

Answer 17

Weight is a measurement of the pull of gravity on an object.

Question 18

Compare physical and chemical changes. Provide a definition, example and explanation.

Question 19

What is the definition of mass?

Answer 19

Mass is the amount of matter in an object?

Question 20

What type of change occurs when you prepare scrambled eggs? Explain the evidence

Answer 20

Both chemical and physical change happens when you prepare scrambled eggs because when you scrabble the eggs you mix it up and you heat it up and change the temeture.

Question 21

How do you calculate density for a regular shaped object?

Answer 21

D= Mass divided by volume

Question 22

How do you calculate density for an irregular shaped object?

Answer 22

Find the volume using the water displacement method and then do the same D= M/V

Question 23

how are the particles in a liquid

Answer 23

the particles in a liquid are close together and are moving in-between fast and slow

Question 24

how are the particles in a solid

Answer 24

how are the particles in a solid are very close together and are moving slowly

Question 25

how are the particles in a gas

Answer 25

they are really far apart and and move very fast