Free Printable TE21 Spiral 1

Worksheets

TE21 Spiral 1

Total questions: 25

Worksheet time: 44mins

Name

Class

Date

The smallest part of any element. Made up of protons, neutrons and electrons.

Atom

AMU

Ion

Isotope

Identifies the number of protons in an atoms nucleus.

Electron Cloud

Atomic Theory

Atomic Number

Mass Number

The negatively charged particles in an atom

Proton

Electron

Neutron

Electron Cloud

The mass number of an atom is the mass of ______ + _____

protons + neutrons

protons + electrons

neutrons + nucleus

protons + nucleus

What is the ATOMIC NUMBER in this element tile?

Nickel

58.693

How many protons are in this element?

196

117

Cannot be determined

Which organelle is the site of photosynthesis?

Cell Wall

Chloroplasts

Cytoplasm

Cell Membrane

Which cell parts are not present in animal cells?

cell membrane & cytoplasm

nucleus & chloroplasts

cell wall & chloroplasts

ribosomes & mitochondria

Which organelle is the location of DNA (genetic material)?

mitochondria

ribosomes

nucleus

Endoplasmic Reticulum

10.

Which organelle is controls the activities of the cell?

nucleus

mitochondria

cell membrane

cytoplasm

11.

Which is NOT a part of cell theory?

All living things are made of cells.

Cells are the smallest units of structure and function in life.

Cells come from other cells.

Cells cannot be created or destroyed.

12.

The "power plant" of the cell that produces energy.

Mitochondria

Cytoplasm

Centrioles

Lysosomes

13.

This organelle controls what goes in and out of the cell

Nucleus

Cell wall

Cytoplasm

Cell Membrane

14.

What is the correct hierarchy of cells?

tissues-cells-organ systems-organs-organisms

cell-organisms-tissues-organs-organ systems

cells-tissues-organs-organ systems-organisms

organs-tissues-cells-organ systems-organisms

15.

According to the Law of Conservation of Mass (Matter), Matter cannot be (a) or (b) , it can only be (c) . This means however many atoms of an element we have before a reaction must be (d) to the number after a reaction.

Choose from the below words

created

destroyed

changed

equal

16.

What is the right part of a chemical equation called...
2H_{2 +}O₂ --> 2H₂O

Reactants

Products

Yields

Chemical Equation

17.

What is the left part of a chemical equation called?
2H_{2 +}O₂ --> 2H₂O

Reactants

Products

Yields

Chemical Equation

18.

What is the number before a chemical formula called?
Ex: 2H₂ + O₂ --> 2H₂O

Coefficient

Subscript

Atom

Equation

19.

The coefficient in 3H₂O is

20.

In 3P₂O₅, there are (a) phosphorus (P) atoms and (b) oxygen (O) atoms.

Choose from the below words

21.

How many Oxygens are in this molecule?
(OH)₂

22.

Is the following equation balanced?
4Fe + 3O₂ --> 2Fe₂O₃

yes

23.

How many HCl molecules do you need to balance this equation?

2Mg + (a) HCl ---> 2MgCl₂ + 2H₂

Choose from the below words

24.

Drag and drop the coefficients that balance this equation 2 $Fe$ + (a) $Cl_2$ ----> (b) $FeCl_3$

Choose from the below words

25.

Balance this equation (a) N₂+ (b) H₂--> (c) NH₃

Choose from the below words

Reset

TE21 Spiral 1

Total questions: 25

Worksheet time: 44mins

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