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Flashcards in my cards Deck (17):
1

what is a compound?

a compound is where 2 atoms or more are combined.

2

what is a mixture?

a mixture is where there are 2 or more substances are mixed together but are not chemically bonded

3

what is an element?

a substance composed of a single kind of atom.

4

who made the periodic table?

mendeleev

5

what is an scientific word for burning?

combustion

6

how long did it take to make the periodic table?

over a year

7

when i use hydrogen and oxygen,what do i make?

water

8

how many groups are in the periodic table?

there are 8 groups in the periodic table

9

when we burn hydrocarbons, what do we usually get

carbon dioxide and water

10

what is combustion?

rapid chemical reaction between a substance and oxygen,involving the production of heat and light

11

what is H2O?

water

12

what is the smallest particle?

an atom

13

where do you find metals on the periodic table?

on the left

14

what are the 2 things that make carbon dioxide?

carbon and oxygen

15

what do we need to burn stuff?

oxygen

16

when you add iron and sulfur what do we get?

iron sulphide

17

what are the 3 thing the we need to keep fire going?

oxygen,heat and fuel