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year 7 Science Homework Week 7

Last updated over 4 years ago

14 questions

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Question 1

1.

Question 2

2.

Question 3

3.

Question 4

4.

Question 5

5.

Question 6

6.

Question 7

7.

Question 8

8.

Question 9

9.

Question 10

10.

Question 11

11.

Question 12

12.

Question 13

13.

Question 14

14.

Which substance is made of only one type of atom?

Element

Atom

Compound

Which substances contain two or more different types of atoms chemically bonded together?

Element

Atom

Compound

What is the smallest part of an element that can exist

Element

Atom

Compound

What does diatomic means?

Three atoms chemically bonded

Two atoms chemically bonded

Two compounds chemically bonded

How would you separate compounds?

Chemical reaction

physical process

burn it

What is a “pure substance”?

Only contain two types of element or compound

Only contains one type of element or compound

Only contains one type of compound

What type of substance contains only two or more types of atom that are chemically bonded?

Element

Compound

Mixture

What type of substance contains only one type of atom?

Element

Compound

Mixture

How would you separate mixtures?

Chemical Reaction

Physical Process

Burn it

Where are protons and neutrons found in an atom?

The nucleus (around the outside)

The nucleus (in the centre)

Orbiting around the outside

What is the charge on the protons?

-1

0

+1

What is the charge on the neutrons?

-1

0

+1

What is the charge on the electrons?

-1

0

+1

What is the atomic number?

The number of protons

the number of neutrons

the number of protons + number of neutrons