Chemistry Review

Front

Which of the following is a chemical change? Options: Iron rusting , Glass breaking, Clothing ripping, Hair cut

Back

Iron rusting 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Is this equation balanced?

Back

No

Tags

NGSS.MS-PS1-5

Front

What is the law of conservation of matter?

Back

The mass of the reactants is the same as the mass of the products.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Which of the following is evidence of a chemical change? Options: Change in state, No new substance is formed, Bubbles forming, Change in shape

Back

Bubbles forming

Tags

NGSS.MS-PS1-2

Front

Which of the following is an example of a physical change, and why? Options: Fire burns in fireplace, because a new substance is formed.; Clothes are folded, because there is a color change.; A mirror is broken, because there is a change in shape/size.; Cookies are baked, because there is a change in temperature.

Back

A mirror is broken, because there is a change in shape/size.

Front

This number is used to represent the number of each atom being represented. What is the name of this number?

Back

The Subscript

Tags

NGSS.MS-PS1-1

Front

This appears on the left side of a chemical formula, and represents how many compounds there are. What is the name of this number?

Back

The Coefficient

Front

How many hydrogen atoms are in this chemical formula? Options: 4 hydrogen atoms, 1 hydrogen atom, 2 hydrogen atoms, 3 hydrogen atoms

Back

4 hydrogen atoms

Tags

NGSS.MS-PS1-1

Front

The atomic number of oxygen is

Back

8

Tags

NGSS.MS-PS1-1

Front

Identify the elements in this compound: Carbon, Helium, Oxygen, Chromium, Hydrogen, Oxygen, Calcium, Hydrogen, Oxygen, Carbon, Hydrogen, Oxygen

Back

Carbon, Hydrogen, Oxygen

Tags

NGSS.MS-PS1-1